content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Rational Decimal Expansion
April 2nd 2006, 03:44 PM #1
Global Moderator
Joined
Nov 2005
From
New York City
Posts
10,616
Thanks
9
Rational Decimal Expansion
I was working with rational numbers and I found something which I consider interesting. That, $\frac{a}{b}$ a rational numbers' decimal expan... | 4 | [
-0.08740234375,
-0.00714111328125,
-0.04150390625,
-0.034912109375,
-0.009765625,
-0.0184326171875,
-0.02294921875,
0.00390625,
0.01708984375,
-0.04248046875,
-0.0260009765625,
-0.0281982421875,
0.052490234375,
0.1181640625,
0.04638671875,
0.00506591796875,
-0.035888671875,
0.03588... | 32,400 | 32400 | |
Finding the x- intercept
September 3rd 2011, 12:46 PM #1
Senior Member
Joined
Jul 2008
Posts
313
Finding the x- intercept
I would just like a second opinion please to ensure I am doing this correctly.
When y = 0
0 = -x^2 + 4x + 5
- 5 = 4x
x = - 1.25
Re: Finding the x- intercept
T... | 4 | [
-0.0216064453125,
-0.0106201171875,
0.061279296875,
0.01806640625,
0.0712890625,
0.0196533203125,
-0.0101318359375,
-0.004150390625,
0.01611328125,
-0.0208740234375,
0.115234375,
0.0017852783203125,
0.0208740234375,
0.060791015625,
-0.049072265625,
0.052734375,
0.01007080078125,
-0... | 32,401 | 32401 | |
Double Integration
November 29th 2007, 11:54 AM
stuwy
Double Integration
∫∫R (x^1/2 - y^1/2) dydx
where y=x^2, y= x^1/4, x=0, x=1
im struggling to solve this!! i came up with an answer of 1.5 but i dont think i have done it correct!...could anyone help please?
November 29th 2007, 01:33 PM
galactus
... | 5 | [
0.07275390625,
-0.08984375,
0.0021209716796875,
-0.031494140625,
0.01409912109375,
-0.11279296875,
-0.06591796875,
0.023193359375,
-0.054931640625,
-0.058837890625,
-0.038330078125,
0.0849609375,
0.004058837890625,
0.050537109375,
-0.0093994140625,
0.072265625,
-0.01251220703125,
-... | 32,402 | 32402 | |
Math Help
November 8th 2007, 05:14 AM #1
Newbie
Joined
Oct 2007
From
on the planet earth
Posts
24
urgent
□ The personnel department of a company has records which show the following analysis of its 200 engineers.
Age
Bachelor Degree
Master Degree
Total
Under 30
90
... | 4 | [
0.0274658203125,
0.08642578125,
0.0283203125,
-0.032958984375,
-0.03173828125,
0.027587890625,
0.01324462890625,
0.0517578125,
-0.1279296875,
0.0673828125,
0.03466796875,
-0.103515625,
0.12158203125,
-0.018798828125,
0.01373291015625,
0.083984375,
-0.054931640625,
-0.07177734375,
... | 32,403 | 32403 | |
Zero divisors and such
April 4th 2010, 10:22 AM
zhupolongjoe
Zero divisors and such
We have elements a in the ring R=Q[x]/(x^5+x^4-x-1)
If a is nilpotent, find the smallest positive k with a^k=0
If a is not nilpotent, but a zero divisor, find a non-zero be that is smallest so that ab=0
If it is not ... | 5 | [
-0.036865234375,
0.08203125,
-0.0322265625,
0.06640625,
0.00946044921875,
-0.07861328125,
0.07568359375,
-0.019287109375,
0.019775390625,
-0.07958984375,
0.01708984375,
-0.0546875,
0.0498046875,
0.0576171875,
-0.06591796875,
0.0439453125,
-0.039306640625,
0.0026092529296875,
-0.0... | 32,404 | 32404 | |
Darboux Sums, Upper/Lower integral
May 3rd 2010, 04:24 PM #1
Junior Member
Joined
Feb 2010
Posts
37
Darboux Sums, Upper/Lower integral
If the function $f : [a,b] \rightarrow R$ is bounded and that $P = \{\{x_0\},.....,\{x_n\}\}$ is a partition of its domain [a,b]. For each index $i \geq 1$ we have:
... | 5 | [
-0.045166015625,
-0.00775146484375,
-0.0003261566162109375,
-0.09912109375,
0.07470703125,
0.0091552734375,
0.076171875,
0.0986328125,
-0.0341796875,
-0.033203125,
-0.126953125,
0.04345703125,
0.10888671875,
-0.0341796875,
-0.00433349609375,
0.0302734375,
0.035888671875,
-0.0104370... | 32,405 | 32405 | |
Can someone show me how to find this derivative?
April 27th 2010, 08:07 AM #1
Member
Joined
Dec 2009
Posts
96
Can someone show me how to find this derivative?
I need to take the derivative of... (-x^2 - 2x) / (x^2 + 2x + 2)^2
I know I use the quotient rule which is
(x^2 + 2 x + 2)^2 (-2x - 2) -... | 5 | [
0.00066375732421875,
0.01025390625,
0.029052734375,
0.034423828125,
0.01275634765625,
0.01214599609375,
-0.04150390625,
0.0118408203125,
0.06689453125,
0.01348876953125,
0.1552734375,
-0.07177734375,
0.01513671875,
-0.00186920166015625,
-0.052001953125,
0.03759765625,
0.0478515625,
... | 32,406 | 32406 | |
Math Help
February 9th 2009, 08:32 AM #1
Member
Joined
Sep 2008
Posts
126
population
A population of animals in an ecological niche is growing in time so that it's rate of growth dp/dt is related to its current size by the differential equation dp/dt = 900/p^2. If time is
measured in years and initi... | 4 | [
-0.05322265625,
0.08056640625,
0.054931640625,
0.0380859375,
-0.003753662109375,
0.0390625,
0.0167236328125,
0.0751953125,
0.0135498046875,
0.061767578125,
0.1513671875,
-0.07421875,
-0.000751495361328125,
0.09228515625,
-0.02587890625,
-0.0113525390625,
-0.08935546875,
0.012145996... | 32,407 | 32407 | |
Magnetorotational instability
From Scholarpedia
Steven A. Balbus (2009), Scholarpedia, 4(7):2409. doi:10.4249/scholarpedia.2409 revision #91455 [link to/cite this article]
This article will briefly cover: theory and applications of the magnetorotational instability in astro- and geophysics, highlighting its histori... | 4 | [
-0.08154296875,
-0.060546875,
0.04833984375,
0.042724609375,
0.0128173828125,
-0.01556396484375,
-0.006439208984375,
-0.0120849609375,
-0.04833984375,
-0.09619140625,
-0.1015625,
0.0126953125,
0.08056640625,
-0.054443359375,
-0.08642578125,
0.0022430419921875,
-0.044677734375,
0.01... | 32,408 | 32408 | |
If abc is not equal to 0, what is the value of (a^3 + b^3 +
Author Message
TAGS:
If abc is not equal to 0, what is the value of (a^3 + b^3 + [#permalink] 16 Jul 2003, 01:16
... | 4 | [
-0.01141357421875,
0.05908203125,
-0.0576171875,
0.04150390625,
-0.08642578125,
-0.00335693359375,
0.00799560546875,
-0.0595703125,
0.058837890625,
-0.031982421875,
0.009765625,
-0.09375,
0.044189453125,
0.000823974609375,
-0.00830078125,
0.10205078125,
-0.0673828125,
-0.0268554687... | 32,409 | 32409 | |
Differentiation!!
Question: The sum of two real numbers $x$ and $y$ is 12. Find the maximum value of their product $xy$.
when x>=0 y>=0 12=x+y>=2sqrt(x*y) (when x=y ,then x+y=2sqrt(x*y)) so x*y<=(12/2)^2=36 ,when x=6 y=6 maximum value of x*y is 36
I will stwp through this so you can see how to apply it to similar pro... | 4 | [
0.05078125,
-0.01544189453125,
-0.1015625,
-0.0849609375,
-0.09765625,
-0.01409912109375,
0.0216064453125,
0.03173828125,
-0.072265625,
-0.0244140625,
-0.023193359375,
0.1455078125,
0.028076171875,
0.0791015625,
0.04931640625,
0.087890625,
-0.00872802734375,
0.06494140625,
-0.091... | 32,410 | 32410 | |
Probability
August 27th 2010, 06:19 PM #1
Junior Member
Joined
Jan 2010
Posts
52
Probability
There are many marbles in a big box. It is known that 30% of the marbles are red, 60% are blue and the remaining 10% is not coloured.
(a) A sample of 5 marbles is picked from the box. Find the probability th... | 5 | [
0.034423828125,
-0.000766754150390625,
0.08203125,
-0.01422119140625,
0.011962890625,
-0.0047607421875,
0.1181640625,
-0.0125732421875,
-0.039794921875,
0.05322265625,
-0.0255126953125,
-0.07275390625,
0.0194091796875,
0.029296875,
0.0045166015625,
0.12158203125,
0.0888671875,
0.00... | 32,411 | 32411 | |
Complex integration
August 8th 2010, 05:20 AM #1
Newbie
Joined
Aug 2010
Posts
1
Complex integration
Hi guys! Just working on a puzzle and I realized I have no idea how to integrate this. Help would be much appreciated. Thanks!
$\int _{0} ^{\pi} (2\sin^2\alpha + (\pi-2\alpha)\sin\alpha\cos\alpha)d\al... | 5 | [
-0.00020313262939453125,
-0.048583984375,
0.013427734375,
0.02783203125,
0.022216796875,
0.109375,
-0.0101318359375,
0.01226806640625,
-0.0625,
0.0223388671875,
-0.0263671875,
0.0003833770751953125,
-0.033447265625,
-0.0133056640625,
-0.021728515625,
-0.01544189453125,
0.07373046875,... | 32,412 | 32412 | |
to find the lengths of the sides of triangle
January 21st 2013, 09:32 PM
arangu1508
to find the lengths of the sides of triangle
A triangle ABC circumscribes a circle of radius 4 cm. AB, BC and CA are the tangents of the given circle. D is the point of contact such that AD = 6 cm and DB = 8 cm. Find the lengths ... | 4 | [
-0.033447265625,
0.056640625,
-0.0201416015625,
0.0205078125,
-0.038330078125,
0.019287109375,
-0.0145263671875,
0.11865234375,
-0.0174560546875,
-0.0478515625,
-0.01953125,
-0.0986328125,
-0.021240234375,
0.030517578125,
0.0208740234375,
0.044921875,
-0.08837890625,
0.0341796875,
... | 32,413 | 32413 | |
Finite-Difference Discretization
Next: Treatment of Interfaces Up: Numerical Solution of Previous: Numerical Solution of
As illustrated in Fig. 3.1 we divide the interval 0<z<D into N equal intervals to construct a mesh of equally spaced points
where h is the mesh width given by N should be chosen large enough ... | 4 | [
-0.060791015625,
0.09375,
0.064453125,
-0.002899169921875,
-0.03857421875,
-0.06640625,
0.0234375,
-0.004608154296875,
-0.0341796875,
0.0186767578125,
-0.005523681640625,
-0.004913330078125,
0.0262451171875,
-0.004638671875,
0.051025390625,
-0.032958984375,
-0.0281982421875,
-0.052... | 32,414 | 32414 | |
Mult. choice implicit differentiation
April 22nd 2009, 01:05 PM #1
Member
Joined
Dec 2008
Posts
92
Mult. choice implicit differentiation
http://i43.tinypic.com/261dxqe.jpg
I explained here^...this is just a practice quiz but I'm not sure if I have the right answer and they messed up the choices, OR ... | 5 | [
-0.076171875,
0.022216796875,
0.0712890625,
0.0162353515625,
0.0035858154296875,
-0.0028076171875,
0.01556396484375,
-0.01318359375,
-0.01806640625,
0.0023956298828125,
0.12890625,
-0.0167236328125,
0.03173828125,
0.0830078125,
0.0074462890625,
0.058349609375,
-0.06787109375,
-0.02... | 32,415 | 32415 | |
Cauchy-Schwarz inequality
February 8th 2011, 11:49 PM #1
Cauchy-Schwarz inequality
Hi,
one of my books states the inequality as
$|x^*y| \leq ||x|| ||y||$ for all $x,y\in\mathbb{C}^{n\times 1}$,
and says that equality holds if and only if $y=\alpha x$ for
$\alpha =x^*y/x^*x$.
To me it look... | 5 | [
-0.01312255859375,
-0.083984375,
-0.049560546875,
-0.0245361328125,
-0.0177001953125,
-0.020263671875,
-0.00138092041015625,
-0.0238037109375,
-0.050537109375,
-0.039306640625,
0.018798828125,
0.03369140625,
-0.007781982421875,
-0.00714111328125,
-0.0009765625,
0.11865234375,
0.03051... | 32,416 | 32416 | |
Derivative help
have a few derivatives i cannot figure out any help would be greatly appreciated 1.at(a+t)^4 2.sin(2x+5) 3.ln(x cos x)
1)Product Rule: $(at(a+t)^4)' = a(a+t)^4 + 4at(a+t)^3$ 2)Chain rule: Start with $u = 2x+5 \Rightarrow \frac{du}{dx}= 2$, $(2\sin(2x+5))' =\frac{d(2\sin u)}{du} \frac{du}{dx}= (2\cos u)... | 5 | [
-0.007049560546875,
0.00141143798828125,
0.08154296875,
-0.0294189453125,
0.0322265625,
0.0032958984375,
0.0001506805419921875,
-0.0400390625,
0.03466796875,
0.08447265625,
0.1533203125,
0.00372314453125,
0.0035858154296875,
-0.00701904296875,
-0.00014972686767578125,
0.0390625,
-0.0... | 32,417 | 32417 | |
Homework Help
Posted by katy on Friday, September 23, 2011 at 3:55pm.
an someone show me the steps to solve this problem? x^2 + 5x +8 divided by x + 3
• algebra - Steve, Friday, September 23, 2011 at 6:03pm
Think of it as a long division problem, and do it the way you would if dividing a 2-digit number into a ... | 4 | [
-0.0810546875,
0.04638671875,
0.078125,
-0.0029144287109375,
0.041259765625,
0.0556640625,
0.000019669532775878906,
0.020751953125,
0.006805419921875,
-0.040283203125,
0.07470703125,
-0.045166015625,
0.011962890625,
0.03955078125,
-0.033935546875,
0.007720947265625,
-0.01007080078125... | 32,418 | 32418 | |
Calculus - Integration
how would I go about integrating: [x^2 / (1+x^2)] dx
And if you didn't know that, you could use trigonometric substitution. $\int{1 - \frac{1}{1 + x^2}\,dx} = \int{1\,dx} - \int{\frac{1}{1 + x^2}\,dx}$ $= x - \int{\frac{1}{1 + x^2}\,dx}$. To find $\int
{\frac{1}{1 + x^2}\,dx}$ Let $x = \tan{\the... | 5 | [
0.06298828125,
0.01544189453125,
0.08154296875,
0.061767578125,
0.033447265625,
-0.024658203125,
-0.011474609375,
0.0213623046875,
-0.0277099609375,
-0.01263427734375,
-0.009033203125,
-0.047607421875,
-0.0859375,
0.06884765625,
-0.0576171875,
-0.00555419921875,
0.07275390625,
0.06... | 32,419 | 32419 | |
show that the function is continuous?
How would i show that f(x)= $x^3$-3 $x^2$+17 is continuous on [-1,1]?
there is a theorem said if "f" and "g" continuous functions then f+g is continuous so I'd like to split the function into three functions $g(x) = x^3$ , $h(x) = -3x^2$ , $j(x) = 17$ I will prove the
first one an... | 4 | [
0.005218505859375,
-0.01312255859375,
-0.02783203125,
-0.0233154296875,
-0.006011962890625,
0.019287109375,
0.0267333984375,
-0.034423828125,
-0.07275390625,
-0.072265625,
0.044921875,
-0.058349609375,
0.031982421875,
-0.007720947265625,
-0.03955078125,
-0.06298828125,
0.0888671875,
... | 32,420 | 32420 | |
Hyperbolic Triangle
May 1st 2011, 10:24 AM #16
Although the question does not explicitly say so, it is usually assumed that hyperbolic space consists of the upper half of the complex plane. So in this problem I think it's safe to ignore the
lower half of the plane.
To calculate $|z|^2$, you have to take... | 4 | [
0.004119873046875,
0.07177734375,
-0.0260009765625,
-0.0016632080078125,
-0.0067138671875,
-0.08251953125,
0.00909423828125,
0.01361083984375,
0.0137939453125,
-0.07763671875,
0.07861328125,
-0.029052734375,
0.060791015625,
0.01165771484375,
-0.056396484375,
-0.023193359375,
0.001190... | 32,421 | 32421 | |
triple integral in given region
November 16th 2009, 08:03 PM
zpwnchen
triple integral in given region
what are the limit of z,y and x to integrate?
I got
$-sqrt(1-y^2) \leq z \leq sqrt(1-y^2)$
$-1 \leq y \leq 1$
$0 \leq x \leq 9$
help me
November 17th 2009, 12:33 AM
simplependulum
hi... | 5 | [
-0.001861572265625,
-0.00897216796875,
-0.006866455078125,
-0.07861328125,
0.0174560546875,
-0.0556640625,
-0.06689453125,
0.1376953125,
-0.06591796875,
-0.0279541015625,
-0.09130859375,
0.08984375,
0.031494140625,
0.1083984375,
-0.0108642578125,
-0.03857421875,
-0.031494140625,
-0... | 32,422 | 32422 | |
Inequalities
selfishmofo wrote:
4|x+1/2|=18
I'm not following this, please explain.
Hi,
First lets discuss about MODULUS ( | | ) .
Modulus is represented by ||MODULUS basically refers to distance
. It is never negative, because distance can never be in negative.
We never say that the distance from Chicago to New... | 4 | [
-0.0031890869140625,
0.0228271484375,
0.0029449462890625,
-0.048095703125,
0.006011962890625,
-0.007171630859375,
0.01165771484375,
0.0703125,
0.036865234375,
-0.037841796875,
0.08740234375,
0.0225830078125,
0.09521484375,
0.03173828125,
-0.050537109375,
0.0089111328125,
0.0737304687... | 32,423 | 32423 | |
Combinatorics
Posted April 9, 2004 at 6:14 pm 4 Comments
The Waffle House is bad at combinatorics.
Last time I visited the Waffle House in Atlanta, I took a photo of their menu. This section of the menu shows the various ways that they can prepare your hashbrowns. Notice
... | 4 | [
0.036865234375,
-0.04345703125,
0.0673828125,
0.01123046875,
-0.07373046875,
-0.0179443359375,
0.0361328125,
-0.020263671875,
-0.004608154296875,
0.10498046875,
-0.060302734375,
-0.00921630859375,
0.060302734375,
-0.068359375,
-0.025390625,
-0.047607421875,
-0.00897216796875,
-0.08... | 32,424 | 32424 | |
reparametrization HELP!!!
February 23rd 2009, 12:41 AM #1
Newbie
Joined
Feb 2009
Posts
3
PLEASE CAN ANYONE HELP ME?? I am completely stuck on this geometry!! If there is a geometry-genious out there: THANK YOU!!
**i have attached the original question sheet!**
(sorry, had no maths symbols, so not... | 4 | [
-0.0023345947265625,
0.021240234375,
0.033203125,
-0.034423828125,
0.054443359375,
0.07177734375,
0.0966796875,
-0.0218505859375,
-0.052490234375,
-0.01507568359375,
0.00078582763671875,
-0.068359375,
-0.0625,
-0.02099609375,
-0.06591796875,
-0.053466796875,
-0.1005859375,
-0.08203... | 32,425 | 32425 | |
boolean algebra
If you need the final expression to be a CNF, then I don't think you can simplify much. The minimal number of conjuncts that I can see is three, versus four in the original formula. Also, it is
difficult to do the simplification without a Karnaugh map. Below, the first two steps split some conjuncts int... | 5 | [
-0.00274658203125,
0.0181884765625,
0.01507568359375,
-0.050537109375,
-0.01275634765625,
0.0172119140625,
0.06396484375,
-0.0751953125,
-0.1025390625,
0.038330078125,
-0.035888671875,
-0.044189453125,
0.05419921875,
0.04345703125,
0.01336669921875,
0.1337890625,
-0.142578125,
0.07... | 32,426 | 32426 | |
Analysis question on quantifiers
January 29th 2009, 08:49 PM #1
Junior Member
Joined
Nov 2007
Posts
28
Analysis question on quantifiers
Something really important that I have learned is that the order in which one writes the quantifiers is of paramount importance; writing them in the wrong order can affe... | 4 | [
0.0045166015625,
-0.01422119140625,
0.07080078125,
-0.01202392578125,
0.049560546875,
0.014404296875,
-0.00164794921875,
-0.0439453125,
0.0908203125,
0.042724609375,
0.032958984375,
0.0771484375,
0.047607421875,
0.033203125,
0.11962890625,
0.0927734375,
0.035400390625,
0.0023498535... | 32,427 | 32427 | |
Journal of the Brazilian Society of Mechanical Sciences
Serviços Personalizados
Artigo
Indicadores
Links relacionados
Compartilhar
versão impressa ISSN 0100-7386
J. Braz. Soc. Mech. Sci. v.24 n.2 Rio de Janeiro maio 2002
http://dx.doi.org/10.1590/S0100-73862002000200002
An Investigation into Mechanisms of Loss... | 4 | [
-0.06298828125,
0.0252685546875,
0.00653076171875,
-0.03271484375,
-0.0341796875,
-0.0286865234375,
-0.11181640625,
0.041259765625,
0.04052734375,
-0.01116943359375,
-0.041015625,
-0.06884765625,
0.0751953125,
-0.07568359375,
-0.00051116943359375,
0.0869140625,
-0.1611328125,
-0.00... | 32,428 | 32428 | |
Principal curvatures of a surface
June 28th 2009, 12:04 AM #1
Member
Joined
May 2008
From
Melbourne Australia
Posts
203
Thanks
15
Principal curvatures of a surface
Find the equations of the principal curvatures of the surface:
x=u, y=v, z=f(x,y)
I can see a method to do this but it loo... | 4 | [
0.04150390625,
-0.028564453125,
-0.0263671875,
-0.0673828125,
0.017578125,
-0.00021076202392578125,
-0.0274658203125,
0.0277099609375,
-0.05224609375,
0.02587890625,
0.0147705078125,
-0.05615234375,
-0.11572265625,
0.06787109375,
-0.0020294189453125,
-0.0272216796875,
-0.087890625,
... | 32,429 | 32429 | |
Joint 2D-DOA and Frequency Estimation for L-Shaped Array Using Iterative Least Squares Method
International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 983092, 8 pages
http://dx.doi.org/10.1155/2012/983092
Research Article
Joint 2D-DOA and Frequency Estimation for L-Shaped Array Using Iterative... | 4 | [
0.0306396484375,
0.06884765625,
-0.01708984375,
-0.029541015625,
-0.022705078125,
-0.0208740234375,
-0.0400390625,
0.0023193359375,
0.0220947265625,
-0.00872802734375,
-0.0257568359375,
0.08544921875,
0.04296875,
-0.002960205078125,
-0.06689453125,
0.0038604736328125,
-0.006072998046... | 32,430 | 32430 | |
MathGroup Archive: November 2006 [00382]
[Date Index] [Thread Index] [Author Index]
Re: Challenge problem
• To: mathgroup at smc.vnet.net
• Subject: [mg71225] Re: [mg71123] Challenge problem
• From: Andrzej Kozlowski <akoz at mimuw.ed... | 5 | [
-0.087890625,
0.06640625,
-0.04736328125,
-0.00799560546875,
0.01544189453125,
0.08544921875,
0.07568359375,
-0.06103515625,
-0.0140380859375,
-0.007568359375,
-0.0186767578125,
-0.07568359375,
0.052978515625,
0.1123046875,
0.0279541015625,
-0.022705078125,
0.034423828125,
-0.00567... | 32,431 | 32431 | |
Seperable Differential Equation
March 13th 2010, 05:47 AM #1
Member
Joined
Feb 2008
Posts
184
Seperable Differential Equation
$dx/{dt}=-ax$ where x=x(t)
$x(t)=Ce^{-t}$ where do the constant C come from?
$dy/dt=ax-by$ where y=y(t) How do i find y(t)
thanks for any help.
Dear charikaa... | 5 | [
-0.115234375,
-0.05615234375,
0.05908203125,
0.014404296875,
0.0537109375,
-0.00933837890625,
0.0263671875,
-0.006988525390625,
0.004486083984375,
0.0869140625,
0.16796875,
-0.07177734375,
-0.002471923828125,
0.044677734375,
-0.007293701171875,
-0.000576019287109375,
-0.031494140625,... | 32,432 | 32432 | |
Ricatti Equations and combining integration constants.
April 23rd 2011, 07:12 PM
Corpsecreate
Ricatti Equations and combining integration constants.
http://i1096.photobucket.com/albums/...lEquations.jpg
Im all good up until part (d).
In part (c) we have a DE with constant coefficients with $\lambda$ = ... | 5 | [
-0.0595703125,
-0.03955078125,
0.09326171875,
0.037109375,
0.052490234375,
0.0133056640625,
0.0098876953125,
-0.0036773681640625,
-0.014892578125,
-0.00146484375,
0.0791015625,
-0.1015625,
0.03271484375,
0.006011962890625,
0.0257568359375,
0.040283203125,
-0.03759765625,
0.04101562... | 32,433 | 32433 | |
Simple polynomial division question
July 20th 2008, 10:16 AM
MrSteve
Simple polynomial division question
Hello
I hope someone can help me with this.
Let's say I want to divide x^2 + x + 1 into x^2 + 1
Am I right in thinking the answer is 1 remainder x?
This is how I am getting my answer...
... | 4 | [
-0.02734375,
0.095703125,
0.0003070831298828125,
-0.0034637451171875,
0.046630859375,
-0.044921875,
0.010498046875,
0.0272216796875,
-0.039794921875,
-0.0859375,
-0.01226806640625,
-0.043212890625,
0.091796875,
0.08154296875,
-0.1044921875,
-0.00592041015625,
0.003265380859375,
0.0... | 32,434 | 32434 | |
Homework Help
Posted by Emma on Saturday, January 1, 2011 at 8:21pm.
Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an arc of length x. Join the two radial edges of the remaining portion of the paper
to form a cone with radius r and height h, as show... | 5 | [
0.016357421875,
0.09375,
0.0172119140625,
0.005035400390625,
0.022705078125,
-0.062255859375,
-0.047607421875,
0.10595703125,
0.00274658203125,
-0.007537841796875,
-0.0098876953125,
0.0164794921875,
0.0279541015625,
0.09716796875,
-0.0016326904296875,
0.0081787109375,
-0.08349609375,... | 32,435 | 32435 | |
Homework Help
Posted by Brianna on Sunday, October 30, 2011 at 11:08pm.
Let h(x) = 3x + 4. For what value of x is (h o h)(x) = h(x). If no such value exists, type DNE in the space provided.
• ****college algebra**** - Steve, Monday, October 31, 2011 at 4:00pm
You want h(h) = h. That is,
3h+4 = h
3(3x+... | 4 | [
-0.04833984375,
0.03515625,
-0.0008087158203125,
-0.0120849609375,
-0.046142578125,
-0.03564453125,
0.039794921875,
-0.0150146484375,
-0.01007080078125,
-0.07470703125,
0.068359375,
-0.042724609375,
0.0281982421875,
-0.099609375,
-0.06494140625,
0.055908203125,
-0.05615234375,
0.04... | 32,436 | 32436 | |
Math Help
August 10th 2010, 08:46 AM #1
Member
Joined
Apr 2010
From
dfsdfdf
Posts
160
Dear Sir
I would be grateful if you can help me to find f(r) in the below questions
thanks
Kingsman
Sum to the n terms of the series using difference method of telescope method .(hint Express the ... | 5 | [
-0.0174560546875,
0.040771484375,
-0.0284423828125,
-0.00014972686767578125,
-0.026611328125,
0.016357421875,
-0.0341796875,
0.042236328125,
-0.095703125,
0.06982421875,
-0.123046875,
-0.08935546875,
0.0010986328125,
0.000518798828125,
-0.016845703125,
-0.08203125,
-0.042236328125,
... | 32,437 | 32437 | |
injective and surjective
February 12th 2010, 06:32 AM
rezona
injective and surjective
For every function f, subset A of the domain and subset B of the codomain prove that If f is injective we have A = f −1(fA) and if f is surjective we have f(f −1B) = B.
February 12th 2010, 08:34 AM
Drexel28
Quote:
... | 5 | [
-0.0123291015625,
-0.00506591796875,
0.0126953125,
0.0125732421875,
0.0133056640625,
-0.0035858154296875,
0.0947265625,
0.07373046875,
-0.05859375,
-0.0107421875,
0.00154876708984375,
-0.040771484375,
0.0279541015625,
-0.04296875,
0.047607421875,
0.06201171875,
-0.00958251953125,
-... | 32,438 | 32438 | |
Quasicrystals and Aperiodic Tiling
Quasicrystals and Aperiodic Tilings
by Aaron Zerhusen
University of Kentucky
Lexington, Kentucky 40506
May 1997
Revised August 1997
email: abzerh00@sac.uky.edu
Copyright (C) 1997. Permission is granted to anyone to make or distribute copies of this document, in any medium, provided... | 4 | [
-0.10693359375,
0.037109375,
-0.044189453125,
-0.10546875,
-0.0517578125,
-0.0211181640625,
-0.0260009765625,
-0.029296875,
0.040283203125,
0.01116943359375,
0.06298828125,
-0.03369140625,
-0.057861328125,
0.00823974609375,
0.0625,
-0.0673828125,
-0.0125732421875,
0.0947265625,
-... | 32,439 | 32439 | |
Basic Linear Algebra question
May 22nd 2009, 04:45 AM
vbiter
Basic Linear Algebra question
find a solution to the system:
5a1 + 2a2 - 3a3 = 4
a1 - a2 + 2a3 = -1
Solution:
we can eliminate a1 from the second row by using R1 - 5R2 -> R2, which
gives:
5a1 - 2a2 - 3a3 = 4
7a2 - 13a3 =... | 4 | [
-0.15234375,
-0.007110595703125,
-0.020263671875,
-0.03662109375,
0.00164031982421875,
0.0234375,
-0.060791015625,
-0.006317138671875,
0.01483154296875,
0.05322265625,
0.031494140625,
0.01422119140625,
0.000209808349609375,
-0.0223388671875,
-0.05419921875,
0.0419921875,
-0.030395507... | 32,440 | 32440 | |
Riemann, Langevin & Hamilton [reply]
September 27, 2010
By xi'an
Here is a (prompt!) reply from Mark Girolami corresponding to the earlier post:
In preparation for the Read Paper session next month at the RSS, our research group at CREST has collectively read the Girolami and Calderhead paper on Riemann manifol... | 4 | [
-0.1640625,
-0.0255126953125,
0.10302734375,
0.0810546875,
0.046875,
-0.060546875,
-0.0181884765625,
0.0263671875,
-0.01220703125,
-0.0184326171875,
-0.015869140625,
-0.002166748046875,
0.083984375,
-0.050537109375,
-0.0281982421875,
-0.0712890625,
0.011474609375,
0.01708984375,
... | 32,441 | 32441 | |
Two Quadratic Equations With (a) Common Root, and an Unknown Coefficient
November 29th 2010, 05:21 AM #1
Newbie
Joined
Nov 2010
Posts
7
Two Quadratic Equations With (a) Common Root, and an Unknown Coefficient
<B>The question is:</B>
If x<sup>2</sup> + 4ax + 3 = 0 and 2x<sup>2</sup> + 3ax – 9 = 0 have... | 4 | [
-0.04931640625,
-0.037841796875,
-0.03662109375,
-0.06298828125,
-0.056640625,
0.053466796875,
-0.07275390625,
0.014892578125,
0.00191497802734375,
-0.0048828125,
0.0390625,
-0.0284423828125,
0.0810546875,
-0.00110626220703125,
0.041015625,
0.0791015625,
-0.060791015625,
-0.0291748... | 32,442 | 32442 | |
tennis ball problem!
April 11th 2008, 02:14 AM
matty888
tennis ball problem!
A company that manufactures tennis balls operates three shifts each day. Based on past experience, it is known that a percentage of the balls produced will be defective. The following table shows
the percentage produced on each shif... | 5 | [
0.029052734375,
-0.0184326171875,
0.07373046875,
-0.0289306640625,
-0.046875,
-0.005401611328125,
0.0244140625,
0.052734375,
0.03857421875,
0.1279296875,
0.0260009765625,
0.000728607177734375,
0.035400390625,
0.061279296875,
0.035888671875,
0.020751953125,
0.0052490234375,
-0.03784... | 32,443 | 32443 | |
Homework Help
Posted by Hemant on Saturday, April 17, 2010 at 1:07am.
500 candidates appeared for a certain test. The mean scores was 59 and variance was 25. Assuming the distribution to be normal. find 1.% of candidates scoring 64 and above. 2. No. of candidates
having score between 54 and 69. ( Given : For a s.n.v.z... | 4 | [
0.029052734375,
0.049072265625,
0.015869140625,
0.026611328125,
0.010009765625,
-0.00970458984375,
-0.005279541015625,
0.1279296875,
-0.0634765625,
0.0260009765625,
-0.0198974609375,
-0.042236328125,
0.07275390625,
-0.00921630859375,
-0.008544921875,
-0.0247802734375,
0.02392578125,
... | 32,444 | 32444 | |
Derivatives ~ Calculus
Posted by Hannah on Tuesday, June 5, 2012 at 6:27pm.
If dy/dx = (1 + x)/(xy), x>0, and y=-4 when x=1, then when x=3, y= what?
• Derivatives ~ Calculus - Count Iblis, Tuesday, June 5, 2012 at 6:43pm
y dy = (1+x)/x dx = (1 + 1/x) dx
Integrate both sides
• Derivatives ~ Calculus - S... | 5 | [
-0.03271484375,
-0.064453125,
0.06103515625,
-0.0218505859375,
-0.0089111328125,
-0.08984375,
0.00872802734375,
0.00823974609375,
-0.005218505859375,
-0.04736328125,
0.04833984375,
-0.00066375732421875,
0.00543212890625,
0.115234375,
-0.039306640625,
0.024169921875,
-0.042724609375,
... | 32,445 | 32445 | |
Problem A3 from the Putnam
Here is problem A3 from the 2007 Putnam exam:
Let k be a positive integer. Suppose that the integers 1, 2, 3, ..., 3k+1 are written down in random order. What is the probability that at no time during this process, the sum of the integers
that have been written up to that time is a p... | 5 | [
-0.040771484375,
-0.0284423828125,
-0.0152587890625,
-0.054931640625,
-0.0157470703125,
-0.006439208984375,
0.1162109375,
-0.05908203125,
0.07666015625,
0.06591796875,
-0.042724609375,
-0.0238037109375,
0.07275390625,
-0.0172119140625,
-0.043701171875,
-0.036865234375,
0.009460449218... | 32,446 | 32446 | |
Math Help
March 22nd 2009, 07:06 AM #1
Show that...
Show that the equation $15 cos x = 13+sin x$ may be written as a quadratic equation in $sin x$.
Hence solve the equation, giving all values of "x" such that 0<=x<=360.
Didn't help me, this is what I did:
$15 cos^2x-(13+sin x)^2$
$225cos^4x=(1... | 4 | [
-0.053466796875,
0.1181640625,
0.00147247314453125,
0.017578125,
-0.0703125,
0.05712890625,
-0.03759765625,
-0.0306396484375,
0.05859375,
-0.043212890625,
0.1376953125,
-0.000400543212890625,
0.052001953125,
-0.00457763671875,
-0.00518798828125,
-0.01123046875,
0.007568359375,
0.00... | 32,447 | 32447 | |
Damped diocotron quasi-modes of non-neutral plasmas and inviscid fluids :: Institutional Repository
Damped diocotron quasi-modes of non-neutral plasmas and inviscid fluids Ross L. Spencera) and S. Neil Rasband Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602 Received 18... | 4 | [
-0.1181640625,
0.01007080078125,
0.0279541015625,
0.06591796875,
-0.00787353515625,
-0.0703125,
-0.03759765625,
0.059326171875,
-0.0107421875,
-0.015380859375,
0.00072479248046875,
-0.0546875,
0.0191650390625,
-0.0030975341796875,
0.039794921875,
-0.07373046875,
0.004425048828125,
... | 32,448 | 32448 | |
geometric progression word problem,
May 28th 2009, 10:42 AM
Tweety
geometric progression word problem,
Quote:
A liquid is kept in a barrel. At the start of a year the barrel is filled with 160 litres of the liquid. Due to evaporation, at the end of every year the amount of liquid in the barrel is reduced
... | 4 | [
-0.025390625,
0.0732421875,
0.02978515625,
-0.0302734375,
0.00689697265625,
0.0240478515625,
0.0240478515625,
0.05517578125,
-0.0458984375,
-0.0179443359375,
0.01904296875,
-0.0026702880859375,
0.06884765625,
0.1181640625,
-0.0390625,
0.00323486328125,
-0.09765625,
-0.041015625,
... | 32,449 | 32449 | |
MacLaurin series/Ratio test.
May 19th 2012, 02:03 AM
happyfingerrs
MacLaurin series/Ratio test.
For f(x) = loge(1-x)
Clarification: The question isn’t loge(1+x), it’s loge(1-x)
a) Find the MacLaurin series: f(0) +f'(0)x + f''(0)/2! + f'''(0)/3!....etc
My question is, to what extent do I keep applyi... | 5 | [
-0.013671875,
-0.09765625,
0.0400390625,
0.03955078125,
0.0208740234375,
-0.0135498046875,
-0.0198974609375,
0.006439208984375,
0.0458984375,
0.03515625,
-0.020751953125,
-0.07373046875,
-0.0203857421875,
-0.0004634857177734375,
-0.0255126953125,
-0.049560546875,
-0.051025390625,
-... | 32,450 | 32450 | |
Second Order Non-Linear
November 23rd 2013, 02:18 PM #1
Second Order Non-Linear
It's been a while since my course in ODEs and I was stumped by this question:
Find the general solution of:
$y''(x) + x^2y(x) = 0$
where
$0<x<\infty$
I have no idea what to do and any CAS I plug this in returns B... | 5 | [
-0.0537109375,
-0.026123046875,
0.080078125,
0.043701171875,
-0.060302734375,
0.004364013671875,
-0.06982421875,
-0.031005859375,
0.0076904296875,
0.0107421875,
0.034912109375,
0.024169921875,
-0.04736328125,
-0.0108642578125,
0.013916015625,
0.032470703125,
0.05810546875,
0.003265... | 32,451 | 32451 | |
Physics Forums - Plane determined by intersecting lines
Plane determined by intersecting lines
1. The problem statement, all variables and given/known data
Find the point of intersection of the lines: x=2t+1, y=3t+2, z=4t+3, and x=s+2, y=2s+4, z=-4s-1, and then find the plane determined by these lines.
2. Relevant ... | 4 | [
-0.06787109375,
-0.01513671875,
-0.059814453125,
-0.0576171875,
0.043212890625,
0.01458740234375,
0.048583984375,
0.07763671875,
-0.007568359375,
0.03515625,
-0.0133056640625,
-0.004608154296875,
0.0380859375,
-0.00628662109375,
-0.06982421875,
0.011962890625,
-0.0703125,
-0.129882... | 32,452 | 32452 | |
Differentiation Question...
February 2nd 2008, 03:04 AM #1
Differentiation Question...
Question:
For the graph $x^2-8x+4$ :
(i) find the coordinates of the stationary point;
(ii) say, with reasoning, weather this is a maximum or minimum point;
(iii) check your answer by using the method of 'comple... | 4 | [
0.00165557861328125,
0.007476806640625,
0.0341796875,
-0.049072265625,
-0.04833984375,
0.02392578125,
-0.0211181640625,
0.138671875,
0.033447265625,
0.0235595703125,
0.06298828125,
0.02001953125,
0.060546875,
0.04736328125,
-0.0186767578125,
0.059814453125,
0.0296630859375,
-0.0588... | 32,453 | 32453 | |
Homework Help
Posted by fanny on Friday, July 22, 2011 at 8:21am.
find the eqt. of tangent to the curve y=-x^2+2x-10.[ans:y=2x-10]
but my ans is y=-9. if im wrong could you show the calculation.
• math - drwls, Friday, July 22, 2011 at 8:37am
At what point along the curve is the tangent contact made?
Bas... | 4 | [
-0.11181640625,
-0.02880859375,
0.03173828125,
-0.01092529296875,
0.052734375,
0.07080078125,
0.095703125,
0.1591796875,
-0.021240234375,
-0.0164794921875,
0.15234375,
-0.044677734375,
-0.00592041015625,
0.0439453125,
-0.01007080078125,
0.06689453125,
-0.07763671875,
-0.07958984375... | 32,454 | 32454 | |
Quasi-Linear PDE xuu_x+y^2u_y=u^2
May 6th 2011, 10:43 AM #1
Quasi-Linear PDE xuu_x+y^2u_y=u^2
Hi folks,
What does one do when the particular solution is defined implicitly and it has to be differentiated an put back into original DE to check it?
See attached pdf...thanks!
You're missing a 2 in your... | 5 | [
-0.0693359375,
-0.028076171875,
0.059326171875,
-0.0152587890625,
0.0179443359375,
-0.00396728515625,
-0.034423828125,
-0.07080078125,
-0.1328125,
-0.03369140625,
0.099609375,
-0.01904296875,
-0.08251953125,
-0.0458984375,
0.03759765625,
0.01153564453125,
-0.027587890625,
-0.053710... | 32,455 | 32455 | |
How do I draw the diagram for this trig. problem???
August 12th 2009, 01:08 AM #1
Senior Member
Joined
Jul 2008
Posts
347
Hi
The elevation of a hill at a place P due east of it is 48 degrees and at a place due south of P the elevation is 30 degrees. If the distance from P to Q is 500 m, find the heig... | 4 | [
-0.025634765625,
0.12255859375,
-0.0458984375,
-0.068359375,
0.0224609375,
0.05859375,
-0.0206298828125,
0.08837890625,
-0.041259765625,
0.03564453125,
0.045654296875,
-0.042724609375,
-0.005859375,
0.10107421875,
0.054443359375,
0.06787109375,
-0.07568359375,
0.0615234375,
-0.01... | 32,456 | 32456 | |
Functions
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Relation:... | 4 | [
-0.03271484375,
-0.027099609375,
0.0032196044921875,
-0.017333984375,
-0.1015625,
0.004425048828125,
-0.08740234375,
-0.0380859375,
0.0732421875,
-0.032470703125,
-0.0089111328125,
0.035400390625,
0.083984375,
0.041259765625,
0.0615234375,
0.04052734375,
-0.041259765625,
-0.0629882... | 32,457 | 32457 | |
Computation of Channel Capacity Based on Self-Concordant Functions
Journal of Electrical and Computer Engineering
Volume 2012 (2012), Article ID 318946, 9 pages
http://dx.doi.org/10.1155/2012/318946
Research Article
Computation of Channel Capacity Based on Self-Concordant Functions
^1Search Center for Complex System... | 4 | [
0.033935546875,
0.00860595703125,
-0.0230712890625,
-0.0205078125,
-0.037109375,
-0.0361328125,
0.045166015625,
0.0303955078125,
0.0458984375,
0.0361328125,
-0.0771484375,
0.0162353515625,
0.0400390625,
-0.00015735626220703125,
-0.037841796875,
-0.0091552734375,
0.033935546875,
-0.... | 32,458 | 32458 | |
A Class of Expected Value Bilevel Programming Problems with Random Coefficients Based on Rough Approximation and Its Application to a Production-Inventory System
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 312527, 12 pages
http://dx.doi.org/10.1155/2013/312527
Research Article
A Class of Expected Val... | 4 | [
-0.0159912109375,
0.019775390625,
0.01275634765625,
-0.07470703125,
-0.07373046875,
-0.0252685546875,
0.019775390625,
0.0986328125,
-0.0059814453125,
0.0023193359375,
0.06103515625,
-0.01336669921875,
0.07666015625,
-0.0260009765625,
-0.078125,
0.000946044921875,
0.049072265625,
-0... | 32,459 | 32459 | |
Dandelin
┌────────────────────────────────────────────────────────────────────────────────────────────┐
│ │
... | 4 | [
-0.043701171875,
-0.015625,
0.052001953125,
-0.0135498046875,
0.042236328125,
-0.05322265625,
0.04296875,
0.02392578125,
0.057861328125,
0.041015625,
0.033203125,
-0.001953125,
-0.001953125,
0.07177734375,
-0.027099609375,
0.060546875,
-0.07421875,
0.0859375,
-0.03271484375,
-0... | 32,460 | 32460 | |
Mathematical Induction Question
March 28th 2010, 08:27 AM #1
Newbie
Joined
Feb 2010
Posts
5
Mathematical Induction Question
Hello,
These problems are so easy but I am making it too hard... I can get everything up to the proof part, which is underlined below
his is not too hard: 1 + 2 + ... + k +... | 4 | [
-0.0625,
0.0537109375,
0.11474609375,
0.07373046875,
0.05810546875,
-0.03125,
0.0306396484375,
0.00885009765625,
-0.0556640625,
0.0191650390625,
-0.08203125,
-0.057373046875,
0.06298828125,
-0.001251220703125,
-0.0537109375,
0.03515625,
-0.0194091796875,
0.07958984375,
-0.0659179... | 32,461 | 32461 | |
Line Integral and Greens Theorem
November 30th 2011, 09:00 AM #1
Member
Joined
Mar 2010
Posts
150
Line Integral and Greens Theorem
I'm supposed to do the following problems, first using line integrals and then Green's theorem....but I keep getting different answers. Can someone please help me see my erro... | 5 | [
-0.09619140625,
-0.0118408203125,
0.0201416015625,
-0.0576171875,
0.00090789794921875,
0.04638671875,
0.02734375,
0.06689453125,
-0.072265625,
0.052978515625,
-0.005523681640625,
0.039794921875,
0.0074462890625,
-0.039306640625,
0.000576019287109375,
0.03564453125,
-0.07421875,
-0.... | 32,462 | 32462 | |
Homework Help
Posted by Jen on Thursday, August 20, 2009 at 12:33am.
test the claim that μ1 = μ2 Two samples are randomly selected from normal populations. The sample statistics are
n1=11,x(bar)=4.8, s1=.76
n2=18, x(bar)=5.2, s2=.51
Assume that σ1 ≠ σ2
Use alpha = .02
I am not sure if this is a 2-sample t test or... | 4 | [
0.0159912109375,
0.055419921875,
0.08349609375,
0.006256103515625,
0.0179443359375,
-0.041259765625,
0.011962890625,
0.10888671875,
-0.0007781982421875,
0.04052734375,
0.059814453125,
-0.080078125,
-0.01312255859375,
-0.05712890625,
-0.0311279296875,
-0.02783203125,
0.052978515625,
... | 32,463 | 32463 | |
Institute for Mathematics and its Applications (IMA)
Mathematical models of cavitation in fluids and quick and accurate numerical predictions are essential at different stages in the design process and the evaluation of performance and cavitation
patterns. A question of particular interest is how to extend the traditio... | 4 | [
-0.0556640625,
-0.024169921875,
0.030029296875,
-0.1201171875,
-0.06103515625,
-0.04150390625,
-0.031982421875,
0.049560546875,
0.000324249267578125,
-0.08251953125,
0.019775390625,
-0.0093994140625,
0.0010528564453125,
0.02783203125,
0.0113525390625,
-0.046142578125,
-0.12109375,
... | 32,464 | 32464 | |
permutation problem
September 27th 2005, 06:49 AM #1
Newbie
Joined
Apr 2005
Posts
11
permutation problem
The problem is from DeGroot 3rd edition, section 1.7,
problem 10: n=100 balls, r red balls. The balls
are chosen one at a time without replacement.
a) what is the pr that a red ball is cho... | 4 | [
-0.03271484375,
0.029052734375,
-0.007537841796875,
-0.07568359375,
0.029541015625,
0.03271484375,
0.0830078125,
0.0301513671875,
0.03466796875,
0.1083984375,
-0.0208740234375,
0.033203125,
0.020751953125,
0.037841796875,
0.07275390625,
0.052734375,
0.0262451171875,
-0.048828125,
... | 32,465 | 32465 | |
Math--Volume and Surface Area
Posted by Emily on Tuesday, April 24, 2007 at 9:11am.
The volume of a cube is 125 cubic inches. Find the surface area.
I know that the volume formula is V=Bh where v=volume, B=area of the base, and h=height. How do I get the surface area though?
Also,
The surface area of a cube is 384 ... | 4 | [
0.0556640625,
0.0262451171875,
0.0208740234375,
-0.0037841796875,
-0.031982421875,
-0.00186920166015625,
-0.03271484375,
0.0537109375,
-0.0308837890625,
0.0038299560546875,
-0.025390625,
-0.01055908203125,
0.0216064453125,
0.053466796875,
0.00897216796875,
0.037841796875,
-0.08447265... | 32,466 | 32466 | |
Interactive Chi-Square Tests
An interactive calculation tool for chi-square tests of goodness of fit and independence
Calculation for the Chi-Square test: An interactive calculation tool for chi-square tests of goodness of fit and independence
Kristopher J. Preacher (Vanderbilt University)
This web utility may be cit... | 4 | [
0.0159912109375,
-0.04345703125,
-0.015625,
0.06640625,
-0.0419921875,
0.01129150390625,
0.005950927734375,
-0.012939453125,
-0.0126953125,
-0.00098419189453125,
0.11767578125,
-0.04150390625,
0.06005859375,
-0.034912109375,
-0.0011444091796875,
-0.07470703125,
-0.0400390625,
-0.05... | 32,467 | 32467 | |
Prove that martingales have zero covariance
April 19th 2012, 08:22 AM
tttcomrader
Prove that martingales have zero covariance
Let $X_n$ be a martingale. Show that $Cov ( X_i-X_{i-1}, X_j-X_{j-1})=0$
So using the covariance formula, I know that $Cov ( X_i-X_{i-1}, X_j-X_{j-1})=E[(X_i-X_{i-1})(X_j-X_{j-1})]-E... | 5 | [
-0.046630859375,
0.006378173828125,
0.03564453125,
-0.064453125,
0.029296875,
0.0341796875,
0.08349609375,
-0.00921630859375,
0.02734375,
-0.00897216796875,
-0.0341796875,
0.0096435546875,
0.00811767578125,
-0.08642578125,
-0.0302734375,
0.040771484375,
0.0084228515625,
0.010803222... | 32,468 | 32468 | |
First Absorption Law
March 24th 2013, 01:16 PM
rhymin
First Absorption Law
Verify the first Absorption Law by means of a truth table. I know that 0 = false and 1 = true, but I'm having trouble figuring out how to write a truth table for this.
The first Absorption Law is:
p v (p ^ q) = p
----------... | 4 | [
0.037353515625,
0.006500244140625,
-0.00823974609375,
0.033203125,
0.01141357421875,
-0.0146484375,
0.06787109375,
-0.045166015625,
0.01226806640625,
0.07666015625,
0.0023193359375,
-0.03955078125,
0.055908203125,
0.083984375,
0.034912109375,
0.036376953125,
-0.05908203125,
0.01525... | 32,469 | 32469 | |
Definite Integration - Double integration by parts
September 1st 2010, 11:21 AM #1
Junior Member
Joined
Aug 2010
Posts
41
Definite Integration - Double integration by parts
I need to find the integral from 0 to 1 of the function below. I have tried using integration by parts and then another integration ... | 4 | [
-0.03271484375,
-0.034423828125,
0.109375,
-0.007476806640625,
-0.04052734375,
-0.1103515625,
0.00823974609375,
-0.061279296875,
-0.06396484375,
0.059326171875,
-0.033203125,
-0.05078125,
-0.03076171875,
0.0810546875,
-0.0301513671875,
-0.046875,
-0.03857421875,
-0.05908203125,
-... | 32,470 | 32470 | |
HCF and LCM
November 12th 2009, 10:32 AM
dangkhoa
HCF and LCM
Suppose that x, y in R*\U(R) that is x,y are non-zero, non-unit in R, where R is UFD. Let x = u.{p_1^(a_1)....p_t^(a_t)}
y = v{p_1^(b_1)....p_t^(b_t)}
where a_i and b_i >= 0 , 1=<i=<t and u,v are in U(R).
Let c_i =max{a_i , b_i} and d_i =... | 4 | [
-0.002349853515625,
-0.00604248046875,
-0.041748046875,
-0.1220703125,
0.039794921875,
0.07421875,
0.064453125,
0.007568359375,
-0.044921875,
-0.038330078125,
0.00124359130859375,
-0.08740234375,
0.06884765625,
0.01324462890625,
0.038818359375,
0.01416015625,
-0.037353515625,
-0.02... | 32,471 | 32471 | |
How to find Standard Deviation?
August 10th 2007, 10:59 PM
wby
How to find Standard Deviation?
In a population of men, their heights are normally distributed with a mean of 178 cm. If a man with a height of 184 cm is shorter than 20% of the population, determine the standard deviation of
the population.
... | 5 | [
0.0732421875,
0.10302734375,
0.0145263671875,
0.026123046875,
-0.037841796875,
-0.029052734375,
-0.0908203125,
0.0966796875,
-0.051025390625,
0.0286865234375,
0.06787109375,
-0.01513671875,
0.09912109375,
0.046875,
0.051025390625,
-0.0732421875,
-0.023681640625,
0.01513671875,
-0... | 32,472 | 32472 | |
ftune.html
Chapter 3
Some Local Optimizations
First, there are some optimizations which a good compiler should make automatically, to save us from having to make minor changes to suit the architecture of the moment.
A common question is whether to use an expression such as x*2 or (x+x). Many compilers automatically c... | 4 | [
-0.00830078125,
0.05126953125,
-0.0172119140625,
0.005706787109375,
0.00421142578125,
-0.068359375,
-0.05712890625,
0.07177734375,
0.003570556640625,
0.0164794921875,
0.0263671875,
-0.01092529296875,
-0.04931640625,
-0.00022125244140625,
-0.0203857421875,
-0.030029296875,
-0.03491210... | 32,473 | 32473 | |
Homework Help
Posted by Arun on Saturday, December 28, 2013 at 9:58am.
The angle of depression of the top and bottom of a tower as seen from the top of a 100m high cliff are 30degree and 60degree respectively. find the height of the tower
• trig - Reiny, Saturday, December 28, 2013 at 10:31am
I assume you made... | 4 | [
-0.029296875,
0.1337890625,
-0.04736328125,
-0.03857421875,
-0.004425048828125,
0.033447265625,
-0.04638671875,
0.11376953125,
-0.078125,
0.02685546875,
0.064453125,
-0.06591796875,
0.025390625,
0.0008697509765625,
0.057861328125,
0.08349609375,
-0.0703125,
0.033935546875,
-0.053... | 32,474 | 32474 | |
Problem using l'hopital rule
February 27th 2011, 08:17 PM #1
Newbie
Joined
Feb 2011
Posts
3
Problem using l'hopital rule
Hi all
I have encountered a problem when applying the l'hopital rule to the following limit; could anyone help to see where i went wrong?
lim x->infinity (1+e^x+2e^2x) / (x+e... | 4 | [
-0.0322265625,
0.0274658203125,
0.08642578125,
-0.031494140625,
0.09423828125,
-0.05419921875,
-0.033447265625,
0.0810546875,
0.059326171875,
-0.016845703125,
0.12890625,
-0.11328125,
0.050048828125,
-0.0308837890625,
-0.01116943359375,
-0.018798828125,
-0.00008249282836914062,
-0.... | 32,475 | 32475 | |
Experiment of the Month
Magnetic Fields Varying as an Inverse Cube
Magnetic fields are generally produced by magnetic dipoles, using either permanent magnets or current-carrying loops of wire. This is different from the usual method of producing an electric field,
using electric charges (or "monopoles"). For both mon... | 4 | [
-0.0654296875,
0.03125,
-0.07177734375,
0.039306640625,
-0.001983642578125,
-0.052978515625,
-0.0234375,
-0.0150146484375,
-0.01385498046875,
-0.038330078125,
-0.03515625,
0.0654296875,
-0.01458740234375,
-0.050537109375,
0.053466796875,
0.031982421875,
-0.009521484375,
-0.04272460... | 32,476 | 32476 | |
polynomial rings
February 27th 2009, 08:22 PM #1
Member
Joined
Sep 2008
Posts
166
polynomial rings
Let $f(x)$ be a polynomial in $\mathbb{Z}[x]$. Prove that if $f(x)$ has a root $\alpha \in \mathbb{Z}$, then $f(x)$ has a linear factor in $\mathbb{Z}[x]$.
Suppose $f(x)$ has a root $\alpha \in \mathbb... | 4 | [
0.0181884765625,
-0.00823974609375,
-0.0849609375,
0.048095703125,
0.0169677734375,
0.033447265625,
0.06787109375,
-0.01513671875,
-0.07861328125,
-0.051025390625,
0.018798828125,
0.0208740234375,
0.07275390625,
-0.01220703125,
0.00176239013671875,
0.0250244140625,
-0.044677734375,
... | 32,477 | 32477 | |
calculating credit card debt using a geometric series
May 12th 2012, 01:03 PM #1
Newbie
Joined
May 2012
From
United States
Posts
4
calculating credit card debt using a geometric series
A man gets a credit card and buys something that charges exactly 800 dollars to the card. The APR on the card is 18 ... | 4 | [
0.02783203125,
0.0673828125,
-0.076171875,
-0.01287841796875,
-0.0830078125,
-0.0654296875,
0.007049560546875,
0.041015625,
0.005126953125,
0.016357421875,
-0.0269775390625,
-0.01214599609375,
-0.00421142578125,
0.0712890625,
-0.043212890625,
0.043212890625,
-0.0179443359375,
-0.02... | 32,478 | 32478 | |
Determine whether he following logic argument is valid.
August 21st 2011, 12:16 AM #1
Newbie
Determine whether he following logic argument is valid.
Last edited by mr fantastic; August 21st 2011 at 12:30 PM. Reason: Re-titled.
Re: Need help in solving this question
We have to deduce $t\rightarrow w$, which... | 4 | [
-0.041259765625,
0.0322265625,
0.0002899169921875,
-0.0146484375,
0.044189453125,
0.0966796875,
0.06640625,
-0.036376953125,
-0.03125,
0.0250244140625,
-0.042724609375,
-0.0034637451171875,
0.01080322265625,
0.1015625,
0.0108642578125,
0.01495361328125,
-0.057861328125,
-0.05859375... | 32,479 | 32479 | |
pigeonhole principle
October 24th 2009, 10:05 AM #1
Junior Member
Joined
Oct 2009
Posts
58
pigeonhole principle
Let G be a Finite group written mlutiplicatively. Prove that if the order of G is odd, then every $x \in G$ has a square root. Conclude the proof with there exists exactly one $g \in G$ with $g... | 5 | [
-0.0035858154296875,
-0.01544189453125,
0.09814453125,
0.059814453125,
0.01116943359375,
0.012451171875,
0.0277099609375,
-0.0218505859375,
0.006500244140625,
0.01007080078125,
0.060546875,
0.04736328125,
0.047607421875,
-0.0263671875,
-0.10693359375,
0.0277099609375,
-0.037353515625... | 32,480 | 32480 | |
Factoring a quadrinomial?
I need help with this one: x^3 +x^2 - 14x -24
by inspection i note that $(-2)^3 + (-2)^2 - 14 * (-2) - 24 = -8 + 4 + 28 - 24 = 0$ so (x+2) is a factor of this polynomial. Dividing $x^3 + x^2 - 14 - 24$ by (x+2) i get $(x+2)(x^2-x-12)$ using
quadratic formula for the 2nd deg, i get roots x = 4... | 4 | [
-0.0250244140625,
-0.01544189453125,
-0.01068115234375,
0.0673828125,
-0.0123291015625,
-0.002838134765625,
-0.0155029296875,
0.04541015625,
-0.026611328125,
-0.0260009765625,
0.09033203125,
-0.004638671875,
0.022705078125,
0.04541015625,
0.0198974609375,
0.031494140625,
-0.005493164... | 32,481 | 32481 | |
Show that a line is parallel to a plane
September 4th 2010, 06:35 AM
Glitch
Show that a line is parallel to a plane
The question:
Show that the line x = t(2 1 3) is parallel to the plane 3x - 3y - z = 2.
I'm not sure how to check if it's parallel. I converted the plane to parametric form, but the line d... | 4 | [
-0.08056640625,
-0.00982666015625,
-0.059814453125,
-0.08740234375,
-0.00994873046875,
0.0203857421875,
0.00750732421875,
0.01251220703125,
-0.0059814453125,
0.056640625,
0.03271484375,
-0.0478515625,
0.011962890625,
-0.00433349609375,
-0.06201171875,
-0.07373046875,
-0.07763671875,
... | 32,482 | 32482 | |
covariance and corellation
February 12th 2009, 08:37 PM #1
Newbie
Joined
Oct 2008
Posts
6
covariance and corellation
1) Suppose that two random variables X & Y are jointly distributed according to the pdf f(x,y)=8xy , 0<=y<=x<=1. What is the correlation coefficient of X & Y?
2) Consider the sample s... | 4 | [
0.0576171875,
-0.07763671875,
0.024658203125,
-0.0625,
0.012939453125,
0.032470703125,
0.006683349609375,
-0.0267333984375,
-0.019775390625,
-0.040771484375,
0.044921875,
0.02685546875,
0.1005859375,
0.06201171875,
0.00019931793212890625,
0.0189208984375,
-0.04443359375,
-0.1318359... | 32,483 | 32483 | |
Rabin-Miller Primality Tester for .NET 4
Rabin-Miller Primality Tester for .NET 4
... | 5 | [
0.01019287109375,
-0.045166015625,
-0.1328125,
-0.00946044921875,
0.08349609375,
-0.09375,
0.046875,
0.083984375,
-0.05029296875,
0.0126953125,
-0.1005859375,
0.07275390625,
0.018310546875,
0.0172119140625,
-0.05712890625,
-0.050048828125,
0.05029296875,
0.01495361328125,
-0.0344... | 32,484 | 32484 | |
Math Help
I need to simplify this: ${(b^{-4/3}c^{1/2})}{(b^{-2/3}c^{-3/2})}$ My answer: ${b^{2}c}$ Is it correct?
Super close, but I think you lost a minus sign. Can you find it?
When terms are multiplied together, their exponents add. Consider $a^3a^3$ each term is really a*a*a, so you can rewrite it as $a^3a^3~~~~... | 4 | [
-0.00011014938354492188,
-0.004150390625,
-0.052734375,
0.06396484375,
-0.11572265625,
-0.05029296875,
0.0023040771484375,
-0.053955078125,
0.07275390625,
0.01007080078125,
0.038818359375,
-0.051025390625,
-0.0269775390625,
0.1025390625,
0.05859375,
0.12158203125,
-0.07861328125,
0... | 32,485 | 32485 | |
Homework Help
Posted by Isiah on Thursday, October 13, 2011 at 10:20pm.
A 23 foot ladder is leaning on a 6 foot fence. The base of the ladder is being pulled away from the fence at the rate of 7 feet/minute. How fast is the top of the ladder approaching the ground when
the base is 6 from the fence? [Note: The ladder i... | 5 | [
-0.032958984375,
0.08154296875,
0.013671875,
-0.0257568359375,
0.05615234375,
0.017822265625,
-0.06787109375,
0.09375,
0.015869140625,
0.01470947265625,
0.08642578125,
0.002685546875,
-0.0286865234375,
0.014404296875,
-0.0189208984375,
0.06494140625,
-0.054443359375,
0.024047851562... | 32,486 | 32486 | |
Prime numbers
From HaskellWiki
(Difference between revisions)
(Made sieve more readable) Newer edit →
← Older edit
Line 37: Line 37:
primes, nonprimes :: [Int] primes, nonprimes :: [Int]
primes = [2,3,5] ++ (diff [7,9..] nonprimes... | 4 | [
-0.0751953125,
-0.010986328125,
0.059814453125,
-0.0291748046875,
0.0546875,
-0.047607421875,
0.0498046875,
0.126953125,
-0.06982421875,
-0.039306640625,
-0.006561279296875,
0.027099609375,
-0.0478515625,
0.00799560546875,
-0.021484375,
-0.001068115234375,
-0.0576171875,
-0.0263671... | 32,487 | 32487 | |
Optimization help needed..
January 29th 2010, 08:54 AM #1
Senior Member
Joined
Sep 2009
Posts
300
Optimization help needed..
Help please,
I need to find the max size of these red rectangles in the attached picture.
I started off with a circle of 1ft radius, I found that the large square is 2ft^2
... | 5 | [
0.052001953125,
0.057373046875,
-0.029052734375,
-0.022216796875,
-0.0234375,
-0.00897216796875,
-0.053955078125,
0.11376953125,
-0.04052734375,
0.0230712890625,
-0.072265625,
0.0123291015625,
-0.013916015625,
0.06201171875,
0.0078125,
-0.0038604736328125,
0.08642578125,
0.01171875... | 32,488 | 32488 | |
Quick Improper Integrals Question
February 21st 2010, 03:11 PM #1
Member
Joined
Sep 2009
From
Minnesota
Posts
80
Thanks
8
Quick Improper Integrals Question
"Determine whether each integral is convergent or divergent. Evaluate those that are convergent"
$\int_{-\infty}^{\infty}{\cos(\pi x)}dx=... | 4 | [
-0.1025390625,
-0.02587890625,
-0.01007080078125,
-0.0037689208984375,
0.07568359375,
-0.0250244140625,
0.02294921875,
0.068359375,
-0.033203125,
0.029296875,
-0.01007080078125,
0.078125,
0.0230712890625,
0.02197265625,
0.0022430419921875,
-0.0693359375,
0.0546875,
-0.060791015625,... | 32,489 | 32489 | |
tricky biased coin flipping question
March 19th 2010, 11:09 PM #1
Newbie
Joined
Sep 2009
Posts
4
tricky biased coin flipping question
I'm having trouble with the following question;
"A biased coin is tossed until more heads then tails appear.
The coin is biased such that it lands on heads with p... | 5 | [
-0.00075531005859375,
-0.07177734375,
0.032470703125,
-0.053466796875,
0.00994873046875,
-0.043212890625,
0.037353515625,
0.003387451171875,
0.033203125,
0.053466796875,
-0.0390625,
-0.033447265625,
-0.046875,
-0.04443359375,
0.044189453125,
0.039306640625,
0.031005859375,
0.004913... | 32,490 | 32490 | |
Math Help
May 9th 2009, 10:11 AM #1
Newbie
Joined
Oct 2007
Posts
21
Proportions
Hey! Could use a little help on how to set up this proportion. I know that the height of the tree = x but I'm not sure where 2x+4 should be put or if that is even right, here is the question:
At a point on the ground 60... | 4 | [
0.0859375,
0.11328125,
0.0191650390625,
0.0103759765625,
0.033447265625,
0.0419921875,
-0.0272216796875,
0.1279296875,
-0.0322265625,
0.00982666015625,
0.022705078125,
-0.032470703125,
0.050048828125,
0.0269775390625,
0.018310546875,
0.0634765625,
-0.0216064453125,
0.0859375,
-0.... | 32,491 | 32491 | |
Countably Compact Sets
August 27th 2013, 01:26 PM #1
Countably Compact Sets
I'm working on this problem, and I'm not sure how to solve it.
Let $(X,\Omega)$ be a topological space and let $A \subseteq X$ be countably compact. Prove that every subset of $A$ that is closed relative to $\Omega$ is also countably... | 5 | [
-0.03369140625,
0.034912109375,
0.0172119140625,
0.0291748046875,
0.036865234375,
0.09521484375,
0.09326171875,
0.03173828125,
0.00173187255859375,
-0.027099609375,
-0.037109375,
-0.0277099609375,
0.08837890625,
0.01361083984375,
0.08740234375,
0.078125,
-0.0294189453125,
-0.039794... | 32,492 | 32492 | |
Universal Cumulatively Enumerable Measure (CEM)
Next: Approximable and Cumulatively Enumerable Up: Measures and Probability Distributions Previous: Dominant and Universal (Semi)Measures
Definition 4.4
(Cumulative measure tex2html_wrap_inline$C$) For semimeasure
B^*
define the cumulative measure
Note that we ... | 4 | [
-0.06591796875,
-0.0255126953125,
-0.00933837890625,
-0.05078125,
0.0068359375,
0.103515625,
0.059814453125,
0.027587890625,
0.0023040771484375,
0.041015625,
-0.006866455078125,
-0.10205078125,
0.0654296875,
0.01312255859375,
-0.0311279296875,
-0.07080078125,
0.0086669921875,
0.035... | 32,493 | 32493 | |
Ratio wrod problem
August 7th 2011, 10:03 PM #1
Member
Joined
Jun 2010
Posts
111
A,B and C shared a sum of money in the ratio 2:3:11
1)If B received $2.50 more than A, how much is the sum of money ? (Here is the question asking for the total money shared between the three or the money shared between ... | 4 | [
-0.055908203125,
0.022705078125,
-0.0262451171875,
-0.036376953125,
-0.0654296875,
0.01007080078125,
0.02734375,
-0.047607421875,
-0.00151824951171875,
0.05712890625,
-0.02587890625,
-0.11474609375,
0.031982421875,
0.048095703125,
0.044921875,
0.0390625,
-0.00836181640625,
0.019165... | 32,494 | 32494 | |
Infinite Series Formula
August 22nd 2010, 11:30 AM
Tclack
Infinite Series Formula
So Here's a few problems where I have to find the nth partial sum:
Given the equation $S_n = a\frac{1-r^{(n+1)}}{1-r}$
The sum of a Geometric series for a sequence $A_n$ such that it follows the general pattern $A_n = ar^... | 5 | [
-0.07421875,
-0.057861328125,
0.00738525390625,
0.03271484375,
-0.0242919921875,
-0.0322265625,
-0.025634765625,
-0.0279541015625,
0.06103515625,
0.0830078125,
-0.0810546875,
-0.01458740234375,
-0.0062255859375,
0.056396484375,
-0.0291748046875,
-0.0189208984375,
-0.0157470703125,
... | 32,495 | 32495 | |
Homework Help
Posted by Nancy on Thursday, April 12, 2012 at 12:05am.
240,000,000x 0.000024/0.005
simplify and convert to scientific notation
• Algebra 2 - Steve, Thursday, April 12, 2012 at 10:38am
2.4*10^8 * 2.4*10^-5 / 5*10^-3
(2.4*2.4/5)*10^(8 - 5 - -3)
28.8*10^0
2.88*10^1
• Algebra 2 - PS ... | 4 | [
-0.037353515625,
-0.009033203125,
0.0281982421875,
-0.0086669921875,
-0.01239013671875,
-0.09033203125,
0.0203857421875,
0.061767578125,
-0.058349609375,
0.04296875,
0.0250244140625,
-0.087890625,
0.048583984375,
0.08349609375,
-0.050048828125,
0.039794921875,
-0.046875,
-0.0123291... | 32,496 | 32496 | |
Vectorial Ekeland Variational Principles and Inclusion Problems in Cone Quasi-Uniform Spaces
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 310369, 19 pages
http://dx.doi.org/10.1155/2012/310369
Research Article
Vectorial Ekeland Variational Principles and Inclusion Problems in Cone Quasi-Uniform Spaces... | 4 | [
-0.04150390625,
0.05859375,
0.08740234375,
-0.0244140625,
-0.0244140625,
0.04248046875,
0.034423828125,
-0.00099945068359375,
-0.0213623046875,
0.033203125,
0.00555419921875,
0.01031494140625,
0.007720947265625,
-0.05908203125,
-0.00897216796875,
-0.1044921875,
-0.012451171875,
-0.... | 32,497 | 32497 | |
Real Numbers - Real Anaylsis
September 3rd 2008, 10:20 AM
hockey777
Real Numbers - Real Anaylsis
Show that if $a,b$$\in$$\Re$, and $a$$eq$$b$, then there exist $\epsilon$-neighborhoods $U$ of $a$ and $V$ of $b$ such that $U$$\cap$$V$ = $\emptyset$
September 3rd 2008, 10:24 AM
Plato
Let $\varepsilon = \fra... | 4 | [
0.03271484375,
0.01092529296875,
-0.0040283203125,
-0.0693359375,
0.024169921875,
0.1337890625,
0.07275390625,
-0.0311279296875,
0.0089111328125,
-0.0155029296875,
0.05810546875,
-0.08447265625,
0.0089111328125,
0.064453125,
0.029541015625,
-0.0302734375,
0.0179443359375,
-0.048828... | 32,498 | 32498 | |
Fourier transform
June 10th 2011, 02:23 PM #1
Member
Joined
May 2010
Posts
241
Fourier transform
Hi there. I'm starting with the Fourier transforms, and I'm having some trouble with my first exercise on this topic.
The problem says: Given $f(x)=H(x)-H(x-l)$ (H(x) is the Heaviside unit step function).... | 5 | [
-0.044677734375,
0.06005859375,
0.035400390625,
-0.06689453125,
0.1298828125,
0.055419921875,
-0.00885009765625,
0.025146484375,
-0.0947265625,
0.0361328125,
0.0458984375,
-0.02734375,
-0.01177978515625,
-0.0576171875,
0.031982421875,
-0.018310546875,
-0.07470703125,
-0.1044921875,... | 32,499 | 32499 |