content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
the encyclopedic entry of phase rule
Gibbs' phase rule, stated by Josiah Willard Gibbs in the 1870s, is the fundamental rule on which phase diagrams are based. It provides the number of degrees of freedom for a given thermodynamic
condition, that is: how many control variables (pressure, temperature, composition, etc )... | 4 | [
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0.0625,
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0.038818359375,
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-0.004... | 32,700 | 32700 | |
Using Laplace
Results 1 to 2 of 2
Thread: Using Laplace
1. May 4th, 2012, 01:23 AM #1
Thread Starter Click Here to Expand
New Member ... | 5 | [
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... | 32,701 | 32701 | |
Expressing a complex number in cartesian form
March 14th 2012, 04:54 AM #1
Junior Member
Joined
Oct 2011
Posts
37
Expressing a complex number in cartesian form
Im stuck on a textbook question that has no previous examples. Express $\left(\frac{\sqrt{3}-i}{2}\right)^{101}$ in cartesian form.
OK. So i... | 4 | [
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0.028808... | 32,702 | 32702 | |
Mixing water at different temperatures
MoniMini
Hello all,
I'm having trouble solving the given problem.
"Assuming that no heat is lost to the surrroundings, what will be the final temperature when 1 kg of water at 10°C is mixed with 5 kg of water at 80°C"
Taking the mean of the 2 fluids will not help here since t... | 4 | [
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0.0756835... | 32,703 | 32703 | |
Generic freeness I
Generic freeness I July 29, 2009
Posted by Akhil Mathew in algebra, commutative algebra.
Tags: commutative algebra, devissage, generic freeness, localization, Noetherian rings, schemes
trackback
There is a useful fact in algebraic geometry that if you have a coherent sheaf over a Noetherian integra... | 5 | [
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Math Help
integrate 1/ (y^2 - 1) with respect to dy. no idea how.. ;0
There are 2 ways to go here 1. Use partial fraction decomposition 1/(y^2-1) = 1/(y-1)(y+1) = A/(y-1) + B/(y+1) 1 = A(y+1) + B (y-1) if y= 1 A =1/2 If y = -1 B= -1/2 1/(y^-1) = 1/2[1/(y-1) - 1/(y+1)]
you have 2 simple integrals 2. Trig sub y =sec(t)... | 5 | [
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Guarded Choice with MonadPlus
In the
previous article
, I introduced the
MonadPlus
class and three examples of monads that allow for non-determinism in programming (
Maybe
and the list data type, both of which are
MonadPlus
types and
Either
, which can be coerced into a
MonadPlus
type). These types were int... | 5 | [
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0.052490234375... | 32,706 | 32706 | |
A Two-Stage Joint Model for Nonlinear Longitudinal Response and a Time-to-Event with Application in Transplantation Studies
Journal of Probability and Statistics
Volume 2012 (2012), Article ID 194194, 18 pages
http://dx.doi.org/10.1155/2012/194194
Research Article
A Two-Stage Joint Model for Nonlinear Longitudinal Re... | 4 | [
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Integrals and initial-value problems?
January 14th 2010, 07:53 PM
oObutterfly-chaserOo
Integrals and initial-value problems?
I thought I understood this problem, until I solved it and got an answer of -4000 bacteria. Here is the problem:
A population of bacteria is changing at a rate of
dP/dt = 3000 /... | 5 | [
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-0.0... | 32,708 | 32708 | |
Different base logarithm proof
February 6th 2010, 05:48 PM #1
Newbie
Joined
Feb 2010
Posts
2
Different base logarithm proof
Hello!
I need to prove that $log_a(x) = c * log_b(x)$
I don't seem to know how to start proving this very evident example.
I started to move them around, and change b... | 4 | [
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... | 32,709 | 32709 | |
Trying to determine initial thrust on an object from angular velocity?
Hi, unfortunately you can't add the angular velocities of the wheels like that. Just like your car has four wheels going 60 mph each, but the car doesn't go 240 mph, in your launcher, the second
wheel just allows there to be good grip and provide mo... | 4 | [
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Combinations simplification, please revise and help
April 21st 2010, 09:12 PM #1
Newbie
Joined
Oct 2009
Posts
13
Combinations simplification, please revise and help
Hi, I'm trying to simplify this but I get stuck at some point.
it goes 1/n! * C(n,2) * P(n,n-2)
which yields:
1/n! * n!/2!(n-... | 4 | [
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... | 32,711 | 32711 | |
Bisection method recursive
May 26th 2010, 08:02 AM #1
Newbie
Joined
Apr 2010
Posts
23
Bisection method recursive
Code:
function recbisect(f,a,b,n,err)
c = a + ( b-a)/2;
fx= inline(f);
fc= feval(fx,c);
fprintf('\n n c fc %g %g %g' , n,c,fc );
if fc < err
return
end... | 4 | [
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... | 32,712 | 32712 | |
On a Reciprocity Law for Finite Multiple Zeta Values
International Journal of Combinatorics
Volume 2010 (2010), Article ID 153621, 13 pages
http://dx.doi.org/10.1155/2010/153621
Research Article
On a Reciprocity Law for Finite Multiple Zeta Values
^1Institut für Diskrete Mathematik und Geometrie, Technische Universi... | 5 | [
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maximum likelihood estimator!
May 10th 2013, 03:39 AM
lawochekel
maximum likelihood estimator!
tried to solve a problem on MLE of the this type below;
to find the MLE of $\theta$
$f(x;\theta) = \theta x^{\theta-1}$$0<x<1, 0<\theta<\infty$
$L(x;\theta) = \prod_{i=1}^{n}\theta x^{\theta-1}$
if ... | 4 | [
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Gradient of line between two points.
September 26th 2010, 10:11 AM
ConotM8350
Gradient of line between two points.
Probably an easy one for you guys.
Find the Gradient of points (-3,4) (5,-2)
I keep getting -6 over 8.
If you could explain how you got the answer and where I'm going wrong that would be... | 4 | [
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Solving cauchy initial value problems for Partial differential equations
February 18th 2013, 07:46 AM #1
Member
Joined
Sep 2012
From
india
Posts
78
Solve the following Cauchy problem :
-xu[x +]yu[y = ]1 for 0<x<y, u=2x on y=3x.
I managed to get the two constants C[1 ]and C[2] as C[1] = xy an... | 4 | [
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-0.099609375,
-0.015... | 32,716 | 32716 | |
Algebraic fractions
May 12th 2008, 10:09 PM
Turple
Algebraic fractions
I'm just confused about a couple of rules. For example if I have multiplied a fraction out to get 9(x+4)-2(x+2) does the 2 in the second bracket get multiplied by -2 or 2?
Also if I have this: 2(x+4)(x+2) is it only the x+4 which is doub... | 4 | [
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Pointwise and uniform convergence
May 11th 2010, 05:17 PM
jackie
Pointwise and uniform convergence
I got stuck on two problems that involves finding the pointwisse limits of piecewise functions. Hope someone can give me a hand.
1) Let $\{a_n\}$ be a sequence that contains each rational in [0,1] precisely onc... | 5 | [
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Coconut Problem - Challenging
January 25th 2007, 07:29 PM #1
Member
Joined
Sep 2006
Posts
221
Coconut Problem - Challenging
The Ultimate Puzzle Site - Brain-Teasers
Same question as there, but this problem only deals with 3 sailors and instead of splitting 1/5, they split 1/3 each time. Does this me... | 5 | [
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0... | 32,719 | 32719 | |
Combinations and permutations
March 18th 2008, 11:37 AM #1
Newbie
Joined
Mar 2008
Posts
20
Combinations and permutations
The 7 rooms of a new home are to be painted. Each room is to be painted one color from a selection of 4 shades of blue (B1,B2,B3,B4) and 3 shades of green (G1,G2,G3) and 2 shades of re... | 4 | [
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-0... | 32,720 | 32720 | |
Finding the eigenvector
June 10th 2009, 01:56 PM #1
Finding the eigenvector
Given a specific Eigenvalue $\lambda$, how do I find an eigenvector of a Matrix $A$?
Specifically, if $\lambda = 4$ and $A =$$\left[\begin{array}{rrr}3&0&-1\\2&3&1\\-3&4&5\end{array}\right]$
By the way, is there a way to make my... | 5 | [
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0.042724609375,
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-0.04931640625,
0.053955078... | 32,721 | 32721 | |
Calculation of Chi-square test for deviation from Mendelian ratios
5.6 Calculation of Chi-square test for deviation from Mendelian ratios
- Put your observed numbers and expected ratios (shall sum up to one) and click the calculation button. In all cells with initial values you can put data (green fields).
The numbe... | 4 | [
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-0.036376953125,... | 32,722 | 32722 | |
Verify Solution
October 5th 2011, 05:57 AM
moonnightingale
Verify Solution
the book says
Determine for which values of m the function
y=exp(mx) is solution of differential equation
y'' + 6y' + 5y=0
Plz help me
October 5th 2011, 06:31 AM
Soroban
Re: Can u helpmefor this question of different... | 4 | [
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0.087890625,
-0.0888671875,
0.00848... | 32,723 | 32723 | |
Homework Help
Posted by Anonymous on Friday, November 11, 2011 at 4:36pm.
Ed long promised to pay is son $400 semiannually for 12 years. Assume Ed can invest his money at 6 % in an ordinary annuity. How much must Ed invest today to pay his son $400 semiannually for 12
years?
• Math - Reiny, Friday, November 11, 201... | 4 | [
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vector Proof - diagonals of a kite
May 30th 2009, 09:53 PM
Enedrox
vector Proof - diagonals of a kite
Another vector proving problem:
Take any kite shape ABCD. How do I prove that the diagonals (AC and BD) are perpendicular for any kite?
I beleive it should include the dot-product of the diagonals exce... | 4 | [
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0.0179443359375,
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-0.0036773681640625,
0.0595703125,
-0.0113525390625,
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-0.06787109375,
-0.0302734375,
0.000759124755859375,
0.1005859375,
-0.033203125,
-0.0... | 32,725 | 32725 | |
Proof using axioms for a field
Hi, I am trying to work through Finite Dimensional Vector Spaces by Halmos, and I am having some difficulty with the first problem on page two (the specific problem is included below). The last class
I took involving formal proofs was linear algebra about 8 years ago, and I am very rusty,... | 4 | [
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0.0052185058593... | 32,726 | 32726 | |
Properties of Z_{n}
October 1st 2009, 04:21 PM
platinumpimp68plus1
Properties of Z_{n}
I want to show that the elements of $\mathbb{Z}_n$ under multiplication that have inverses are also the generators of $\mathbb{Z}_n$ under addition.
My answer so far: The only integers with multiplicative inverses are -1 ... | 5 | [
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0.07275390625,
0.0245361328125,
-0.064453125,
-0.10302734375,
0.0361328125,
0.005645751953125,
0.06103515625,
-0.1435546875,
-0.06396484375,
0.0216064453125,
0.0027008056640625,
-0.... | 32,727 | 32727 | |
The Cooling Law Problem
May 10th 2012, 12:20 AM
nabey1
The Cooling Law Problem
A temperature probe is placed in a saucepan filled with hot water, and the temperature is recorded at 30 second intervals for 5 minutes. The ambient room
temperature is 18.5°.
The data is recorded in the table.
Time (t) ... | 4 | [
-0.08544921875,
-0.00262451171875,
-0.035888671875,
0.087890625,
0.0986328125,
-0.034912109375,
0.035400390625,
0.0228271484375,
0.05029296875,
0.09375,
0.07080078125,
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0.0810546875,
0.076171875,
-0.016357421875,
-0.003082275390625,
-0.1083984375,
-... | 32,728 | 32728 | |
Ratios and proportions
January 22nd 2013, 10:47 AM #1
Newbie
Joined
Jan 2013
From
Canada
Posts
1
Ratios and proportions
Hi, i am having a little bit of difficulties with ratios and proportions and would really appreciate if someone could help me understand this problem.
Solve x : 6/8 = 9/x+7
... | 4 | [
-0.0220947265625,
0.041259765625,
0.038818359375,
0.07470703125,
0.01177978515625,
0.05029296875,
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0.01483154296875,
-0.044677734375,
-0.0279541015625,
0.059814453125,
-0.050048828125,
-0.02734375,
0.03076171875,
-0.0196533203125,
-0.059326171875,
-0.06884765625,
0.... | 32,729 | 32729 | |
Homework Help
Posted by Heather on Sunday, January 6, 2013 at 3:23pm.
solve the inequality
e^x+e^x-x=6
can you show work
• calculus - Reiny, Sunday, January 6, 2013 at 3:26pm
You don't have an inequality, you have an equation
Why do you have two terms the same?
Is there a typo ?
• calculus - Heat... | 4 | [
-0.072265625,
0.04541015625,
0.0299072265625,
0.03125,
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0.0026092529296875,
-0.00286865234375,
-0.054443359375,
-0.08203125,
-0.03588867187... | 32,730 | 32730 | |
Extending Continuous Sublinear maps on dense subsets of a Banach space
up vote 0 down vote favorite
Suppose X' and Y are Banach spaces and X is a linear subspace dense in X'. Let T be a continuous map of X to Y satisfying:
(1) ||T(x+y)|| is less than or equal to ||T(x)||+||T(y)||.
Please prove whether or not in gene... | 5 | [
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-0.08203125,
0.0269775390625,
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0.04150390625,
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-0.09375,
-0.03271484375,
0.03515625,
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0.038330078125,
0.02001953125,
-0.0400390625,
-0.029296875,
0.... | 32,731 | 32731 | |
Homework Help
Posted by lisa on Thursday, November 17, 2011 at 12:55pm.
1. The speed of a passenger trin is 18mph faster than the speed of a freight train. The passenger train travels 260 miles in the same time it takes the feight train to travel 170 miles. Find the
speed of each train.
• algebra - Henry, Saturday,... | 4 | [
-0.0223388671875,
0.0177001953125,
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-0.01708984375,
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0.0087890625,
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0.017333984375,
0.0093994140625,
0.0334... | 32,732 | 32732 | |
Integration by Trig substitution
February 11th 2010, 02:56 AM
racewithferrari
Integration by Trig substitution
Find the integration of :
(x^3)/(sqrt(x^2+100))
I did the following work, but it seems my answer is not matching to the Wolfram|Alpha' answer.
Attachment 15355
int x^3/(sqrt( x^2 +100... | 5 | [
-0.031982421875,
0.017578125,
-0.004302978515625,
-0.03125,
0.006988525390625,
-0.109375,
-0.076171875,
0.02880859375,
-0.007537841796875,
0.032470703125,
0.09228515625,
-0.028076171875,
-0.02587890625,
0.1015625,
0.00830078125,
0.022705078125,
-0.0010833740234375,
0.04638671875,
... | 32,733 | 32733 | |
Proof of the integration of L^1 functions
March 14th 2009, 09:48 PM #1
Newbie
Joined
Feb 2009
From
Loma Linda, CA
Posts
10
Proof of the integration of L^1 functions
I am having difficulty proving the following,
Let $f: X \rightarrow R \ { } f \in L^{1}(\mu) \ { } \alpha \in R$
Prove that $\... | 4 | [
0.037353515625,
-0.016845703125,
0.0172119140625,
-0.0703125,
0.1083984375,
0.031005859375,
0.041259765625,
0.1083984375,
-0.0830078125,
0.041748046875,
-0.007659912109375,
0.0264892578125,
-0.004791259765625,
0.057373046875,
0.00128936767578125,
-0.0067138671875,
0.05322265625,
0.... | 32,734 | 32734 | |
Math Help
December 2nd 2008, 09:40 AM #1
tanh(x)
I'm trying to prove:
$\tanh(2x)=\frac{2\tanh(x)}{1+\tanh^2(x)}$
Here's what I've done so far:
$\tanh(2x)=\frac{\sinh(2x)}{\cosh(2x)}=\frac{\left( \frac{e^{2x}-e^{-2x}}{2}\right)}{\left(\frac{e^{2x}+e^{-2x}}{2}\right)}$
$=\frac{e^{2x}-e^{-2x}}{2... | 5 | [
0.033447265625,
0.07177734375,
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0.0181884765625,
0.08837890625,
0.0208740234375,
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0.007659912109375,
-0.0281982421875,
0.039794921875,
0.095703125,
-0.134765625,
-0.04638671875,
0.0057373046875,
0.0220947265625,
0.0220947265625,
0.0213623046875,
-0.032714... | 32,735 | 32735 | |
Enzyme Kinetics Simulation
Textbooks for biochemistry make much of the classical enzyme kinetics of W.W. Cleland and of the Michaelis-Menten expression. The equations for a single reaction catalyzed by an enzyme are:
K[1] K[3
]A + E[a] <=========> Complex -------> P + E[a
] K... | 4 | [
-0.09130859375,
-0.0289306640625,
-0.03564453125,
-0.03076171875,
0.03466796875,
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0.04443359375,
0.080078125,
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0.037109375,
-0.0224609375,
-0.0576171875,
-0.0751953125,
0.03515625,
... | 32,736 | 32736 | |
Homework Help
Posted by jessica on Sunday, March 18, 2012 at 1:14pm.
2. An object is moving along the parabola y = 3x^2.
a) When it passes through the point (2, 12), its “horizontal” velocity is dx/dt= 3. What dt
is its “vertical” velocity at that instant?
b)If it travels in such away that dx/dt=3 for all t,then wh... | 5 | [
-0.024658203125,
-0.0634765625,
-0.037841796875,
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0.03369140625,
-0.0302734375,
0.037109375,... | 32,737 | 32737 | |
Simultaneous Equation help.
January 3rd 2010, 10:00 AM #1
Newbie
Joined
Jan 2010
Posts
2
Simultaneous Equation help.
Hi guys, hoping this is the right forum.
I've got a Maths assignment I'm working on and I've completed the whole paper save one question. I'm really not sure how to go about doing thi... | 4 | [
-0.031982421875,
0.05078125,
0.0419921875,
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0.002960205078125,
-0.046875,
0.039306640625,
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0.0673828125,
0.0830078125,
-0.0255126953125,
0.0205078125,
-0.07958984375,
0.06396484375,
... | 32,738 | 32738 | |
Does abstract nonsense of model categories determine the "nonlinear" morphisms of $L_\infty$ algebras?
up vote 4 down vote favorite
2
Recall that a Lie algebra is a module for the operad $\mathrm{Lie}$, which is freely generated by a binary antisymmetric operation $\beta$ modulo an equation that is quadratic in $\beta... | 4 | [
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-0.1025390625,
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0.00445556640625,
0.032958984375,
0.0068664550... | 32,739 | 32739 | |
Integration
September 23rd 2009, 10:28 AM #1
Newbie
Joined
Oct 2007
Posts
15
Integration
The question is:
The integration of e^(-abs (x)) from -infinitiy to + infinity
The absolute before the x is throwing me off...
I got
-e^(-abs(x)) from -infinitiy to + infinity
i graphed it ... | 4 | [
-0.003204345703125,
-0.03271484375,
-0.0289306640625,
-0.055908203125,
0.07666015625,
-0.03173828125,
0.01202392578125,
0.087890625,
-0.0859375,
0.003082275390625,
0.12890625,
-0.04248046875,
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-0.00384521484375,
0.0277099609375,
-0.033935546875,
0.07470703125,
-0.1279... | 32,740 | 32740 | |
Homework Help
Posted by Anonymous on Friday, April 27, 2012 at 9:55pm.
The three angles of a triangle have measures 12x degree, 3x degree, and 7y degree, where 7y>60. If x and y are integers, what is the value of x?
• Geometry - Reiny, Friday, April 27, 2012 at 11:27pm
12x + 3x + 7y = 180
15x + 7y = 180
... | 4 | [
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0.1259765625,
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0.0283203125,
0.09521484375,
-0.0081787109375,
-0.051513671875,
-0.048095703125... | 32,741 | 32741 | |
Sinking fund question
March 9th 2008, 05:51 AM #1
Junior Member
Joined
Sep 2007
Posts
38
Sinking fund question
I have this question I can't figure out:
$1000 is borrowed for 20 years at 5% effective. The borrower does not pay interest currently and will pay all accrued interest at the end of 20 year... | 5 | [
0.058837890625,
0.041259765625,
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0.0091552734375,
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0.02880859375,
0.0137939453125,
0.0634765625,
-0.00982666015625,
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0.1259765625,
-0.10400390625,
0.0654296875,
-0.1171875,
-0.0177001953125,
-0... | 32,742 | 32742 | |
50 Ohm TO 75 Ohm - RF Cafe Forums
Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the
past available for review. It is unfortunate that the scumbags of the world ruin an ot... | 5 | [
-0.04345703125,
0.11083984375,
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0.06396484375,
0.01220703125,
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0.059814453125,
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0.0004062652587890625,
-0.01251220703125,
0.0986328125,
0.013671875,
-0.021850585... | 32,743 | 32743 | |
Showing how pi/2+theta = cos using unit circle.
January 16th 2011, 08:06 PM #1
Member
Joined
Jan 2011
Posts
87
Showing how pi/2+theta = cos using unit circle.
Hey all,
Been stuck with my classwork lately, I can not visualize why pi/2+theta = cos theta. This is similar to my last post except i was ab... | 4 | [
-0.08544921875,
-0.03173828125,
-0.00518798828125,
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0.0179443359375,
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0.036865234375,
0.03564453125,
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0.0286865234375,
-0.000728607177734375,
-0.019287109375,
-0.06982421875,
-0.021606... | 32,744 | 32744 | |
hello to all! need help in number theory
Let p be a prime of the form 4k+3. Prove that either {(p-1)/2}!≡1 (mod p) or{(p-1)/2}!≡-1 (mod p)
By Wilson's theorem we have, $1\cdot 2\cdot 3 \cdot ... \cdot (p-1) \equiv -1(\bmod p)$. Now, $p-1 \equiv -1$, and $p-2\equiv -2$, and so on ... until the middle. Thus, $(-1)^{(p-1... | 5 | [
-0.0224609375,
-0.0615234375,
-0.004058837890625,
-0.03515625,
0.023193359375,
0.025634765625,
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0.0693359375,
0.041015625,
0.037353515625,
-0.004180908203125,
0.0002956390380859375,
0.030517578125,
0.02880859375,
-0.07568359375,
0.000640869140625,
0.0155029296875,
-0.... | 32,745 | 32745 | |
Fibbonacci and the golden ratio. • /r/CasualMath
all 6 comments
[–]Steve1325 points6 points7 points
sorry, this has been archived and can no longer be voted on
Yes...sort-of. In super math terms I would say that you are doing Power Iteration on the Matrix Form of the Fibonacci Sequence
Basically, like the second li... | 4 | [
-0.03564453125,
0.04931640625,
-0.08154296875,
0.01397705078125,
-0.06591796875,
-0.068359375,
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-0.000335693359375,
-0.00775146484375,
0.0252685546875,
0.059814453125,
0.1220703125,
-0.052734375,
0.0419921875,
-0.0615234375,
0.00677490234375,
-0.0498046875,
0.01696... | 32,746 | 32746 | |
Enemy/Defender Probability
October 29th 2010, 01:53 PM #1
Enemy/Defender Probability
In a game of n people, each person is asked to select two other players. No player knows whether or not they've been selected. What is the probability that at least one person is not selected by
anyone?
What we've got so... | 5 | [
0.031494140625,
0.041748046875,
-0.03759765625,
-0.04833984375,
0.03466796875,
0.062255859375,
0.06640625,
0.037353515625,
0.0191650390625,
0.061767578125,
0.006927490234375,
-0.00087738037109375,
0.01544189453125,
-0.043701171875,
-0.0089111328125,
0.044921875,
-0.0225830078125,
-... | 32,747 | 32747 | |
Relations
January 28th 2011, 08:59 AM #1
Junior Member
Joined
Nov 2010
Posts
40
Relations
Prove:
$R\circ (S\cap T)\subseteq R \circ S \cap R \circ T$
and an example where inclusion is strict
$R \circ S\cap T \subseteq R\circ (S\cap R^-^1 \circ T)$
and an example where inclusion is str... | 5 | [
-0.03271484375,
0.01318359375,
0.0022125244140625,
0.07666015625,
0.0439453125,
-0.005340576171875,
0.09716796875,
0.047607421875,
0.00897216796875,
-0.035888671875,
-0.0186767578125,
-0.032470703125,
0.1611328125,
0.040283203125,
0.038330078125,
-0.060791015625,
0.0625,
-0.0327148... | 32,748 | 32748 | |
Scale Invariant Feature Transform
From Scholarpedia
Tony Lindeberg (2012), Scholarpedia, 7(5):10491. doi:10.4249/scholarpedia.10491 revision #142692 [link to/cite this article]
(Redirected from
SIFT
)
Scale Invariant Feature Transform (SIFT) is an image descriptor for image-based matching and recognition develop... | 4 | [
-0.0712890625,
0.0267333984375,
-0.034912109375,
-0.087890625,
0.140625,
0.0245361328125,
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-0.0361328125,
0.08935546875,
-0.095703125,
-0.00830078125,
-0.0255126953125,
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0.06298828125,
-0.0308837890625,
-0.00994873046875,
-0.00146484375,
0.122558593... | 32,749 | 32749 | |
Homework Help
Posted by pam on Wednesday, July 18, 2012 at 2:51am.
A man on the top of a 40 meter tower directly overhead the road is watching a car moving on a straight road. The car speed makes an angular velocity with respect to the observer in a constant speed
of 0.16radian/sec. Find the linear velocity of the car... | 4 | [
-0.0272216796875,
0.1044921875,
0.060791015625,
-0.07861328125,
-0.0289306640625,
0.0289306640625,
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0.06396484375,
-0.0004711151123046875,
0.031982421875,
0.11474609375,
-0.037109375,
0.0308837890625,
0.03955078125,
-0.04638671875,
0.099609375,
-0.103515625,
0.07666... | 32,750 | 32750 | |
Algebra on CVP Analysis
May 10th 2008, 02:27 AM
Riccid
Algebra on CVP Analysis
Hi Guys,
Algebra has never been one of my academic strong points and whilst I understand the basics I'm having trouble understanding the workings of the following calculation. So yes I do have the answer
but I just don't get ... | 4 | [
-0.0166015625,
0.027099609375,
0.034423828125,
-0.0634765625,
0.055419921875,
0.01409912109375,
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0.09228515625,
-0.03466796875,
0.0498046875,
0.109375,
-0.08642578125,
0.00390625,
0.01220703125,
-0.035888671875,
0.045166015625,
-0.0263671875,
0.005126953125,
-0.07... | 32,751 | 32751 | |
Simple derivations on geometrical figures .
September 25th 2011, 11:22 PM #1
Newbie
Joined
Sep 2011
Posts
17
Simple derivations on geometrical figures .
Hii , this is the thread for simple derivations on geometrical figures.
Here I begin with the easiest proof of the area of circle. Although there a... | 4 | [
-0.0322265625,
0.018798828125,
0.0294189453125,
0.061767578125,
0.0751953125,
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0.08740234375,
0.034423828125,
-0.0279541015625,
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0.039306640625,
0.00653076171875,
0.0302734375,
-0.043701171875,
-0.058837890625,
-0.01... | 32,752 | 32752 | |
Math Help
October 30th 2008, 11:59 PM #1
Member
Joined
Oct 2008
From
Melbourne
Posts
166
hey y'all,
I got a question (obviously)
"By expressing $y = \sinh{(x)}$ as a quadratic in the term $e^x$, show $\sinh^{-1}(x) = \ln{(x + \sqrt{x^2 +1})}$."
This is my worked solution for the quadra... | 4 | [
0.031982421875,
0.02001953125,
0.07421875,
-0.01043701171875,
0.0419921875,
-0.05029296875,
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0.02880859375,
0.1279296875,
-0.07275390625,
0.01556396484375,
0.0260009765625,
-0.025146484375,
0.0111083984375,
-0.01239013671875,
-0.04663... | 32,753 | 32753 | |
Homework Help
Posted by Deb on Tuesday, January 15, 2013 at 6:23pm.
An aircraft maintains a speed of 500 miles per hour in a southwestern direction. The velocity of the jet stream is constant 50 miles per hour from the west. Find the resultant vector, the speed, and
actual direction of the aircraft.
• trig - Henry,... | 4 | [
0.038818359375,
0.035400390625,
-0.052978515625,
-0.0157470703125,
0.0048828125,
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0.00567626953125,
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-0.07373046875,
0.01385498046875,
-0.030517578125,
0.0230712890625,
-0.031005... | 32,754 | 32754 | |
Circle Problem
If [m(i),1/m(i)],m(i)>0,i=1,2,3,4 are four distinct points on the circle ,then m(1)*m(2)*m(3)*m(4)=??? (a)-1 (b)1 (c)0 (d)None
This looks like a very innocent question, but it is not. Let's look at just one such point. Circle: $x^{2} + y^{2} = r^{2}$ First point has x-coordinate 'a': $a^{2} + y^{2} = r^... | 4 | [
0.039306640625,
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0.0810546875,
0.0390625,
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0.08984375,
0.000072479248046875,
-0.... | 32,755 | 32755 | |
Control Systems/Eigenvalues and Eigenvectors
From Wikibooks, open books for an open world
Eigenvalues and Eigenvectors[edit]
Eigenvalues and Eigenvectors cannot be calculated from time-variant matrices. If the system is time-variant, the methods described in this chapter will not produce valid results.
The eigenvalu... | 4 | [
-0.035888671875,
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0.017333984375,
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0.01202392578125,... | 32,756 | 32756 | |
Homework Help
Posted by ki on Saturday, April 20, 2013 at 5:57pm.
4. The total value of the $1 bills and $5 bills in a cash box is $124. There are 8 more $5 bills than $1 bills. How many of each are there?
• algerba 1 - DW, Saturday, April 20, 2013 at 6:23pm
pretend $1 is x
and $5 is y
x+8=y *bc you h... | 4 | [
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-0.04638671875... | 32,757 | 32757 | |
Homework Help
Physics - hey, Thursday, August 12, 2010 at 9:50am
a). With the above assumption, initial velocity, just off the table surface is u = 4.8 m/s (assume in the horizontal, X direction)
Vertical height, distance, S = 1.0 m (given)
Acceleration = acceleration of gravity = 9.8 m/s2 (assumed).
To calculate the ... | 4 | [
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... | 32,758 | 32758 | |
general solution of differential equation
June 9th 2012, 04:02 AM #1
Super Member
Joined
Sep 2008
Posts
607
general solution of differential equation
$\frac{dy}{dx} = x(1-x)$
$dy = x(1-x) dx$
$dy = x-x^{2} dx$
$\int dy = \int x-x^{2} dx$
is this so far correct? cuse my book gives me a... | 4 | [
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0.03369140625,
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0.0137939453125,
-0.0286865234375... | 32,759 | 32759 | |
Integration
Actually, this is a prove question, I really need steps thanks
I need to leave .... But try tan(2x)=2tanx/(1-(tanx)^2) , tan(3x)=(3tanx-(tanx)^3)/(1-3(tanx)^2)
Smoke.. Just mow I came back home and I started to solve your integral... I have discovered a very interesting result believe it or not (tanx)(tan... | 5 | [
0.0296630859375,
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0.006195068359375,
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0.025146484375,
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-0.0267333... | 32,760 | 32760 | |
Algebraic Equation ヽ(´□｀。)ﾉ Need help~
October 9th 2012, 02:01 AM
asterism
Algebraic Equation ヽ(´□｀。)ﾉ Need help~
Given that 81h/2e + 2e/h = 18,
Find the value of e : h
Does anyone here know how I should go about doing this? I confused myself mid-way when attempting to solve the equation >n<;
October 9... | 4 | [
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... | 32,761 | 32761 | |
The Binomial Theorem/Factorials?
June 7th 2009, 09:54 PM #1
Junior Member
Joined
Jan 2009
Posts
26
The Binomial Theorem/Factorials?
Im a little confused on how to do this problem.
Use the definition of [n] to show that [ 6 ] + [6] = [7] for all integers 1≤r≤6
[r ] [r-1] [r] = [ r]
The formu... | 4 | [
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0.0031280517578... | 32,762 | 32762 | |
Help with a seemingly simple math problem!
August 12th 2007, 10:38 PM
konnie
Help with a seemingly simple math problem!
A circle is tangent to the y-axis at y=3 and has one x-intercept at x=1.
(a) Determine the other x-intercept
(b) Deduce the equation of the circle.
My answer: EH? please help!... | 4 | [
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... | 32,763 | 32763 | |
Homework Help
Posted by Lily on Friday, August 19, 2011 at 2:15am.
Please can someone show me the steps to do this problem?? Also, please don't tell me to just google the solution because I've already tried and have tried to do this problem by myself for hours
now...Thank you so much.
You are measuring trees in a for... | 4 | [
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Linear Programming - Help please!
May 15th 2006, 03:23 AM #1
Newbie
Joined
Mar 2006
Posts
17
Linear Programming - Help please!
An orchadist has 10 hectares of land available for growing Fuji apples and Nashi pears. She estimates that each hectare of apples will cost $5000 to establish, and each hectare o... | 4 | [
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0.0134887695... | 32,765 | 32765 | |
the encyclopedic entry of Second harmonics generation
Second harmonic generation
(
SHG
; also called
frequency doubling
) is a
nonlinear optical
process, in which
photons
interacting with a nonlinear material are effectively "combined" to form new photons with twice the energy, and therefore twice the
frequen... | 4 | [
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0.000801... | 32,766 | 32766 | |
Urgent second differential problem
Please someone please find the second differential for this equation (x3) + (y3) = 1
i did but i am not the gettin the answer the book said the answer is -2x/(y5)
If you are unsure how to use LaTeX, just use a / for the vinculum and use brackets where they are necessary. Otherwise i... | 5 | [
-0.08642578125,
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-0.003... | 32,767 | 32767 | |
Calculus - maximizing area
November 18th 2009, 07:39 PM
sm010291
Calculus - maximizing area
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y = 10−x2. What are the dimensions of such a rectangle with the greatest possible area?
November 19th 2009, 03:05 AM
Scott H
... | 4 | [
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0.05078125,
0.017089... | 32,768 | 32768 | |
Solution set using De Moivre's theorem
August 22nd 2011, 08:56 AM #1
Member
Joined
Jul 2011
Posts
196
Solution set using De Moivre's theorem
Let $z = \frac{128}{\sqrt2}(1 + i)$. What are all possible solutions of:
$w = z^{1/7}$
So, after converting to polar form I have:
$z^{1/7} = 2(cos\le... | 5 | [
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... | 32,769 | 32769 | |
Homework Help
Posted by Indu on Monday, July 7, 2008 at 12:01pm.
express the component of a cross product vector C= A x B in terms of Levi civita product vector and the component of a and B, using this relation show that A . ( AxB ) = 0
• Math - destiny, Monday, July 7, 2008 at 2:20pm
write a dimesions of each... | 5 | [
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0.0311279296875,
-0.076171875,
0.066406... | 32,770 | 32770 | |
Proof by Contrapositive
May 13th 2009, 03:15 PM #1
Proof by Contrapositive
Let $S = \{a, b, c, d,\}$ be a set of four distinct integers. Prove that if either (1) for each $x \in S$, the integer $x$ and the sum of any 2 of the remaining 3 integers of S are of the same
parity, or (2) for each $x \in S$, the int... | 4 | [
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0.057373046875,
... | 32,771 | 32771 | |
Prove: if (a,b,c) is a Pythagorean triple, then a and b cannot both be odd
September 25th 2010, 10:21 AM #1
Intro exercise:
Show that any integer square leaves remainder 0 or 1 on division by 4.
$a_{even}=2k$: $a^2=(2k)^2=4(k^2)=0\mod{4}$
$a_{odd}=2k-1$: $a^2=(2k-1)^2=4(k^2-k)+1=1\mod{4} \square$
... | 4 | [
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-0.... | 32,772 | 32772 | |
Secant: Introduction to the Secant Function (subsection Sec/05)
The best-known properties and formulas for the secant function
Values in points
Using the connection between the cosine and secant functions gives the following table of values of the secant function for angles between 0 and 2 π:
General characteristics... | 4 | [
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0.001... | 32,773 | 32773 | |
Comparing fractions, explaining differences
August 3rd 2006, 06:14 PM
Euclid Alexandria
Comparing fractions, explaining differences
From the book: "Which fraction is closest to 0? Explain your answer."
a. $\frac{1}{2}$
b. $\frac{1}{3}$
c. $\frac{1}{4}$
d. $\frac{1}{5}$
Answer = d. 1 part ou... | 4 | [
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0.1025390625,
-0.0415... | 32,774 | 32774 | |
P norm and essential supremum
August 25th 2007, 03:38 AM #1
Newbie
Joined
Jul 2007
Posts
13
P norm and essential supremum
If ||f ||p= {òx |f|p dm}1/p is p norm of measurable complex function
' f ' , m denoting
the measure on set X ,what is the relationship between lim|| f ||p (p®¥) (if exists... | 5 | [
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0.1201171875,
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0.03271484375,
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0.035888671875,
0.03955078125,
-0.02... | 32,775 | 32775 | |
I need help passing the Police Exam.
November 18th 2007, 03:38 PM #1
mathnewbie
Guest
I need help passing the Police Exam.
Hi all,
I'm looking for some help on some word problems. I need to pass the pre interview police exam. Any help would be greatly appreciated!
Here are a couple of examples.
Two ... | 4 | [
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0.06689453125,
0.0283203125,
-0.00982666015625,
0.034912109375,
0.0137939453125,
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0.031494140625,
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0.005645751953125,
-0.03955078125,
0.039306640625,
-0.015625,
-0.035888671... | 32,776 | 32776 | |
Find the number c that satisfies the conclusion of Rolle's Theorem.
$f(x) = \sqrt{x} - \frac{1}{7}x$ Find the derivative of f(x) and set equal to 0: \begin{aligned}<br /> f(x) &= x^{1/2} - \frac{1}{7}x \\<br /> f'(x) &= \frac{1}{2}x^{-1/2} - \frac{1}{7} \\<br /> 0 &=
\frac{1}{2 \sqrt{x}} - \frac{1}{7} \\<br /> \end{al... | 4 | [
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0.07763671875,
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-0.03466796875,
-0.01403... | 32,777 | 32777 | |
Help with L'Hospital's Rule question
November 25th 2009, 05:20 PM
dark-ryder341
Help with L'Hospital's Rule question
Hey guys,
I was just wondering if you could help me out with a question. I think I've wittled it down enough but I'm having troubles simplifying it and I'm not sure if I've done one step righ... | 5 | [
0.056640625,
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0.06884765625,
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0.050537109375,
0.0174560546875,
-0.02734375,
... | 32,778 | 32778 | |
Eponential Functions
April 22nd 2008, 04:14 PM #1
Newbie
Joined
Apr 2008
Posts
2
Eponential Functions
Okay, I have tried for 2 hours on this, and I'm sure it is going to turn out to be one of those questions where it is a lot simpler than it seems but, here goes, I would love for anyone to help
and e... | 4 | [
-0.00799560546875,
0.048583984375,
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0.053466796875,
0.01495361328125,
0.01202392578125,
0.049072265625,
0.0167236328125,
-0.0366... | 32,779 | 32779 | |
polynomial and factor theorem
November 2nd 2009, 03:57 AM #1
Newbie
Joined
May 2009
Posts
17
polynomial and factor theorem
Hi guys could you check over what i have done and point me in the right direction with part ii
i had to use polinomial division to find the remainder 3x-1 / 9x^5-4x^4
i got... | 4 | [
-0.00154876708984375,
0.0004634857177734375,
0.04150390625,
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0.0751953125,
0.048828125,
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0.06884765625,
0.064453125,
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0.043212890625,
-0.051025390625,
0.... | 32,780 | 32780 | |
Can somone please explain what they are asking? (Maclaurin Series)
March 24th 2012, 05:25 PM #1
Newbie
Joined
Mar 2012
From
Imad Ghadie
Posts
2
Can somone please explain what they are asking? (Maclaurin Series)
Hey everyone!
I'm trying to work on this assignment right now and I'm stuck on this q... | 5 | [
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0.10205078125,
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0.0030517578125,
0.0130615234375,
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0.01483154296875,
0.00039100646972656... | 32,781 | 32781 | |
General Univalence Criterion Associated with the
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 307526, 9 pages
http://dx.doi.org/10.1155/2012/307526
Research Article
General Univalence Criterion Associated with the th Derivative
^1Department of Mathematics, Faculty of Science and Information Technolo... | 5 | [
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-0.118... | 32,782 | 32782 | |
Probability of cards
December 7th 2012, 04:14 PM #1
Member
Joined
Sep 2010
Posts
96
Probability of cards
How would I solve a problem that asks me to calculate the probability of drawing the following cards from a deck, if I were to draw the cards one at a time:
{Jack, Queen, King, Ace}?
What ar... | 4 | [
0.076171875,
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0.033935546875,
0.043212890625,
-0.058837890625,
0.0260009765625,
-0.037353515625,
-0.046142578125,
-0.09033203125,
-0.0235595703125,
-0.017333984375,
-0.04150390625,
0.0537109375,
0.02197265625,
-0.045166... | 32,783 | 32783 | |
Revista Brasileira de Ensino de Física
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Print version ISSN 1806-1117
Rev. Bras. Ensino Fís. vol.33 no.4 São Paulo Oct./Dec. 2011
http://dx.doi.org/10.1590/S1806-11172011000400006
... | 4 | [
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0.0644... | 32,784 | 32784 | |
Expanding expressions
August 16th 2009, 10:41 PM #1
Junior Member
Joined
Aug 2009
Posts
31
Expanding expressions
Im not too sure how to expand these two expressions
1/ (x+2y)(x-2y)2
2/ (1-x)(1+x+x2+x3)
The small numbers r squared and cubed.. not sure how to use it here
Would be good ... | 4 | [
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0.0230712890625,
0.06201171875,
0.0322265625,
0.05517578125,
-0.0654296875,
0... | 32,785 | 32785 | |
Integral problem from Hardy book.
Hint: $ax^2+2bx+c=a(x^2+\frac{2b}{a}x+\frac{c}{a})=a((x+\ frac{b}{a})^2-\frac{b^2}{a^2}+\frac{c}{a})$ $a((x+\frac{b}{a})^2+\frac{ac-b^2}{a^2})=a((x+\frac{b}{a})^2+(\frac{\sqrt{ac-b^2}}{a})^2)=a(\frac
{\sqrt{ac-b^2}}{a})^2(\frac{(x+\frac{b}{a})^2}{(\frac{\sqrt{ ac-b^2}}{a})^2}+1)$ Now j... | 5 | [
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0.014892578125,
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0.033935546875,
0.0067138671875,
-0.02697753... | 32,786 | 32786 | |
Normal Subgroup Clarification
December 14th 2012, 02:08 PM #1
Junior Member
Joined
Nov 2012
From
Greensboro, PA
Posts
45
Thanks
2
Normal Subgroup Clarification
A classmate stated the following today during class: N is a normal subgroup of G, then gng^-1 = n for all g∈ G and n ∈ N.
I disagree... | 5 | [
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0.01171875,
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0.0155029296875,
... | 32,787 | 32787 | |
Strong induction
November 21st 2008, 06:35 AM
captainjapan
Strong induction
Suppose that a store offers gift certificates in denominations of 25 dollars and 40 dollars. Determine the possible total amounts that you can form using these gift certificates. Prove your
answer using strong induction.
Im stuc... | 4 | [
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0.0429687... | 32,788 | 32788 | |
Metric space and boundedness
December 6th 2008, 03:55 PM #1
Member
Joined
Oct 2008
Posts
156
Metric space and boundedness
Prove: Let $X$ be a metric space, let $a \in X$ be a limit point of $X$, and let $f: X \to \mathbb{R}$ be a function. Suppose that $\lim_{x\to a} f(x) = L$. For all $K \in \mathbb{R}$... | 4 | [
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0.08349609375,
-0.07... | 32,789 | 32789 | |
Math Help
March 25th 2007, 08:54 AM #1
Circle
O is the center of the circle; AB is the diameter
P is on OB.
the angle OQP = angle ORP = 10 degree
The angle AOQ = 40 degree
Find angle ROB
Hello,
maybe this comes too late, but nevertheless..
I only can offer you a more or less prec... | 4 | [
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0.064453125,
0.019775390625,
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-0.021728515625,
... | 32,790 | 32790 | |
Mastering recursive programming
For new computer science students, the concept of recursive programming is often difficult. Recursive thinking is difficult because it almost seems like circular reasoning. It's also not an intuitive
process; when we give instructions to other people, we rarely direct them recursively.
... | 5 | [
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0.021484375,
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0.023071289... | 32,791 | 32791 | |
Integration
I think this shouldn't be difficult but I can't figure it out! >.< $\int\displaystyle{\frac{2x}{\sqrt{x+1}}}dx$ Thank you for helping!
Hello !Substitute $u=\sqrt{x+1}$ $\frac{du}{dx}=\frac{1}{2 \sqrt{x+1}}=\frac 1{2u}$ Thus $dx=2u du$ $\int \frac{2x}{\sqrt{x+1}} ~dx=\int \frac{2x}{u} \times (2u) ~du$ and $... | 5 | [
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-0.02978515625,
0.00549316... | 32,792 | 32792 | |
Math Help
Prove that parallelograms on the same base and betweem the same parallels are equal in area .
Hi thereddevils, Draw parallelogram ABCD with AB being the top side. Extend AB to E such that BE = DC. Connect D to B and C to E. You have just constructed another parallelogram BECD with same base
as ABCD and betw... | 4 | [
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0.02... | 32,793 | 32793 | |
URGENT! Drawing graph from linear programming
August 8th 2007, 05:29 PM #1
Newbie
Joined
Aug 2007
Posts
5
Hi... i hope someone can help me because I'm sure i'm working this out correctly but these two lines should cross!!!! can anyone tell me if I'm going wrong anywhere...
Plotting 0.7c + 0.8t = 56
... | 4 | [
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-0.12451171875,
... | 32,794 | 32794 | |
Re: st: Pareto v. lognormal
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: Pareto v. lognormal
From "Austin Nichols" <austinnichols@gmail.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: Pareto v. lognormal
Date Tue, 6 Mar 2007 15:33:21 -0500
Stas, Patrick, et al.... | 4 | [
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-0.010314941406... | 32,795 | 32795 | |
How to take limit of a function from one side
November 6th 2012, 04:44 PM #1
Junior Member
Joined
Jul 2012
From
NY
Posts
40
How to take limit of a function from one side
$\lim_{x \to 1^{+} } \frac{-x}{x - 2}$
I only know how to do this by direct substitution, but I'm not sure how to do it from o... | 5 | [
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0.0... | 32,796 | 32796 | |
The subgroup membership problem for F_2 x F_2
May 17th 2011, 03:43 AM
Swlabr
The subgroup membership problem for F_2 x F_2
So, I am not entirely sure what belongs in here so I thought I would share a very elegant proof I came across recently, due to one K.A. Mihailova, from 1958.
Background: Let $G=\langle ... | 5 | [
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Tough Problem from Rotman's Group Theory, 3rd Ed
September 30th 2009, 10:15 AM
signaldoc
Tough Problem from Rotman's Group Theory, 3rd Ed
Given a group G of order (2^m)k, k odd. If G contains an element of order 2^m, then (show that) the set of elements of G having odd order is a (normal) subgroup of G.
Thi... | 4 | [
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0.028320312... | 32,798 | 32798 | |
simulation variable
April 15th 2007, 11:53 AM
braddy
simulation variable
HI please can someone cheeck this problem I tried to do?
Suppose X is the waiting time, in seconds, for a certain particle's emmission,
f(x)=0.1e^(-0.1x), x>0
0 elsewhere.
You are simualting a random sample of 2 values of ... | 4 | [
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-... | 32,799 | 32799 |