content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Initial value problem: stuck on detail, help wanted!
November 11th 2008, 08:22 AM #1
Newbie
Joined
Nov 2007
Posts
9
Hi there.
I'm stuck solving the following problem, as I'm not sure how to find the values of 'B'. I gather I need to use the original DE, but I'm lost as to how. Can someone please help... | 4 | [
-0.0849609375,
0.043212890625,
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0.006622314453125,
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0.09716796875,
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0.0174560546875,
0.060302734375,
0.12255859375,
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0.0242919921875,
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0.055908203125,
-0.00299072265625,
0.... | 0 | 0 | |
Derivative of Implicit function, EXAM TOMORROW MORNING, PLEASE HELP!!!
April 3rd 2006, 08:27 PM #1
Super Member
Joined
Mar 2006
Posts
705
Thanks
2
Derivative of Implicit function, EXAM TOMORROW MORNING, PLEASE HELP!!!
$-3x^2+1xy-1y^3=-15$
I have to find the slope of the tangent line at the point... | 5 | [
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Homework Help
Posted by MissPatte on Wednesday, June 25, 2014 at 2:44am.
multiply (n^3+8)(n-4) can you give me an example on how to solve this please
• Algebra - Steve, Wednesday, June 25, 2014 at 5:51am
do things just as you would with numbers:
(2+5)(7-3)
2*7 + 5*7 - 2*3 - 5*3
You have
(n^3... | 4 | [
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-0.059570312... | 2 | 2 | |
Power Series (Complex Analysis)
September 21st 2008, 07:04 PM #1
Member
Joined
Mar 2008
Posts
99
Power Series (Complex Analysis)
Find the radius of convergence of the given power series.
(1) ${\sum_{k=0}}^{\infty}$$\frac{(k!)^2}{(2k)!}(z-2)^k$
(2) ${\sum_{j=0}}^{\infty}$$\frac{z^{3j}}{2^j}$
... | 5 | [
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0.045654296875,
-0.01... | 3 | 3 | |
Homework Help
Posted by Angie Need Help ASAP on Sunday, December 1, 2013 at 8:22pm.
A regulation baseball has mass 145 g and diameter 22.86 cm. Will this ball float
or sink in water?
Vsphere =
€
4
3π⋅r3
• Physics - Jai, Sunday, December 1, 2013 at 9:29pm
Steps:
1. Get the volume of the sphere (basebal... | 4 | [
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Homework Help
Posted by gen on Thursday, November 11, 2010 at 8:01pm.
if y1=x^2+3x-1 and y2=x-5,
find: a. y1+y2
b. y1-y2
c. y1(y2)
• calculus - jai, Thursday, November 11, 2010 at 8:38pm
y1 = x^2 + 3x - 1
y2 = x - 5
for y1 - y2, combine similar terms,, for terms with same variables, add their numeri... | 4 | [
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... | 5 | 5 | |
supplementary exercise of trigo
June 28th 2013, 07:54 PM #1
Member
Joined
Apr 2013
From
Mahinog
Posts
78
Thanks
5
supplementary exercise of trigo
If A, B, C are the angles of a triangle, prove that cos^2A + cos^2B + cos^2 C = 1-2cosAcosBcosC
I've tried to use A+B+C=180, but I can't get the c... | 4 | [
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0.0196533203125,... | 6 | 6 | |
Express and calculate...
November 25th 2010, 04:34 PM #1
Member
Joined
Sep 2009
Posts
145
Express and calculate...
Hi,
If $\log_9 x = a$ and $\log_3 y = b$, express $xy$ and $\frac{x}{y}$ as powers of $3$.
If $xy = 243$ and $\frac{x}{y} = 3$, calculate $a$ and $b$.
I got the expression part... | 4 | [
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... | 7 | 7 | |
Distance Formula
August 25th 2010, 09:19 PM
GLAMX
Distance Formula
I'm really having a hard time with this. It deals with distance formula.
http://i35.tinypic.com/2j5hztf.jpg
As you can see from that picture, I tried solving the problem and got 117 as an answer. But my teacher told me the answer was 3√... | 4 | [
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Homework Help
Posted by Kimberly on Wednesday, June 10, 2009 at 3:29pm.
simplify: (2k+7)(7k-1)\
can someone please help me solve this problem and go through the steps to solving it with me. Its too confusing for me. Thank You
• pre algebra - MsPJ, Wednesday, June 10, 2009 at 4:11pm
Use FOIL (first, inner, out... | 4 | [
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Laurent expansions
December 1st 2009, 10:04 PM
conmeo
Laurent expansions
Find all Laurent expansions centered at z0 = 0 for f(z) = 1/[z^2(z^3 + 1)] and find the region of convergence for each expansion.
For this problem, I start with rewrite f(z) = 1/(z^2) *1/ [1-(-z^3)] then use geometric series to write l... | 5 | [
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Homework Help
Posted by kevin on Sunday, October 11, 2009 at 11:59am.
Brian O'Reilly earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as
a tutor. How much does Brian earn as a tutor?
•... | 4 | [
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Is there a Faa di Bruno-like formula for composition of three functions?
up vote 4 down vote favorite
2
Faa di Bruno's formula (MathWorld, Wikipedia) gives the kth derivative of f(g(t)) as a sum over set partitions. (I'm not sure how well-known the combinatorial interpretation is; for example see a
2006 paper of Micha... | 5 | [
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Homework Help
Posted by Teresa on Sunday, January 28, 2007 at 1:06pm.
Factor Completely: I am really confused on how to start it.
12q^5w^2-36q^4w^3-120q^3w^4
Help please. :)
Factor out 12q^3w^2:
12q^3w^2(q^2 - 3qw - 10w^2)
Can we factor further? Yes.
q^2 - 3qw - 10w^2 factors are (q - 5w)(q + 2w).
We end up wit... | 4 | [
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0.078125,
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0.037109375... | 13 | 13 | |
Homework Help
Posted by Taylor on Monday, January 24, 2011 at 9:17pm.
In a motorcycle race, one lap of the course is 650 m. At the start of the race, John sets off 4 seconds after Tom does, but John drives his motorcycle 5m/s faster and finishes the lap 2.5 seconds
sooner than Tom does.
What is the speed at which eac... | 4 | [
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Proof of a problem concerning least upper bounds
August 21st 2011, 08:17 PM #1
Newbie
Joined
Aug 2011
Posts
18
Proof of a problem concerning least upper bounds
The exercise:
Suppose that R is a partial order on A, B1 ⊆ A, B2 ⊆ A, x1 is the least upper bound of B1, and x2 is the least upper bound of ... | 5 | [
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Homework Help
Posted by Brandy on Friday, April 26, 2013 at 3:49pm.
The height of a projectile launched into the air is given by h (t)= -16t^2 + 48t + 60, where h is the height of the projectile in feet above the ground and t is the number of seconds after its
launch. Find the *instantaneous rate of change* in the hei... | 4 | [
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Homework Help
Posted by Dan on Sunday, January 23, 2011 at 10:48pm.
√(x+2) -7 =√(x+9)
• Pre Calc - Reiny, Sunday, January 23, 2011 at 11:19pm
are we solving?
If so, then ....
square both sides
x+2 - 14√(x+2) = x+9
- 14√(x+2) = 7
- 2√(x+2) = 1
(at this point I can tell that this cannot h... | 4 | [
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algebra word problem
May 14th 2008, 06:57 PM #1
Newbie
Joined
May 2008
Posts
1
algebra word problem
Irv's cycle rental shop, Irv rents all kinds of cycles: unicycles,tandem bikes, regular bikes, and even tricycles for little kids. He parks all the cycles in front of his shop with a helmet for
each ri... | 4 | [
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Robot Inverse Kinematics
We've seen the forward kinematics problem. The inverse kinematics problem is much more interesting and its solution is more useful. At the position level, the problem is stated as, "Given the desired
position of the robot's hand, what must be the angles at all of the robots joints?"
Humans sol... | 5 | [
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Homework Help
Posted by Destiny on Tuesday, October 21, 2008 at 11:08pm.
HELP!!!!!!!!!!!!!
write equation of a polynomial function with the given characteristics.
Leading coefficient is 1 or -1
crosses the x axis at -2,3, and 4
touches the x axis at 0
lies above the x axis between -2 and 0
• algebra - Reiny, T... | 4 | [
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If zy < xy < 0, is | x - z | + |x| = |z|?
Author Message
TAGS:
If zy < xy < 0, is | x - z | + |x| = |z|? [#permalink] 17 Sep 2010, 11:10
1
... | 4 | [
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continuous function, integral
April 15th 2009, 05:55 PM #1
Newbie
Joined
Mar 2009
Posts
7
continuous function, integral
Suppose that $f: [a,b] \rightarrow \mathbb{R}$ is continuous and $f(x) \geq 0$ for all $x \in [a,b]$. Prove that if $\int^b_a f(x)dx=0$, then $f(x)=0$ for all $x \in [a,b]$.
Attempt... | 4 | [
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A couple Algebra 1 problems (polynomial division, mixture problem)
April 29th 2012, 03:18 PM
Tsuzuku
A couple Algebra 1 problems (polynomial division, mixture problem)
Divide. (x^3 - 3x^2 + 3x + 1) divided by (x - 2)
A solution containing 20% acid is mixed with a solution containing 10% acid to make 200 lit... | 4 | [
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... | 23 | 23 | |
Lamp with a parabolic reflector
May 5th 2010, 07:38 AM #1
Newbie
Joined
Sep 2009
Posts
8
I attempted to solve this problem for hours.
I used x^2=4py and substitution. Didn't quite work.
Please, help. Thanks!
A lamp with a parabolic reflector is shown in the figure. The bulb is placed at the f... | 4 | [
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Trouble with complex numbers
May 7th 2012, 12:25 PM #1
Newbie
Joined
Apr 2009
Posts
18
Trouble with complex numbers
The question is this:
$|(2+i)(cos\frac{\pi}{6}-i sin\frac{\pi}{6})|$
I'm not sure if what I am doing is right...
My next step was this:
$|(2+i)(\frac{\sqrt3}{2}-\frac{i}{... | 4 | [
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Angle of View
Home Donate New Search Gallery Reviews How-To Books Links Workshops About Contact
Angle of View
... | 4 | [
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XLSTAT-PLS
View a tutorialXLSTAT-PLS is a statistical Excel add-in with advanced modeling tools such as Partial Least Squares (PLS) regression and Principal Component regression (PCR). These regression methods
free oneself from some of the constraints of the classical linear regression and analysis of variance, such ... | 4 | [
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-0.09912109375,
0.12060546875,
0.0703125,
0.0137939453125,
0.0010986328125,
0.057373046875,
0.05712890625,
0.004730224609375,
0.007598876953125,
-0.021240234375,
0.0218505859375,
-0.0... | 27 | 27 | |
Application of Mathematics in Construction
Mathematics in Construction
Introduction:
In the real world of building construction there are many rich problems which can be used to build sense making and reasoning skills for students.... | 4 | [
-0.0308837890625,
0.072265625,
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-0.0185546875,
-0.0194091796875,
0.037353... | 28 | 28 | |
Quadratics
November 30th 2012, 06:48 PM #1
Junior Member
Joined
Nov 2012
From
Abu Dhabi
Posts
55
Thanks
3
Quadratics
Can you please help me with this question
Point O is the intersection of 2 roads which cross at right angles; one road runs from north to south, the other from east to west. C... | 4 | [
-0.0228271484375,
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0.09375,
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0.07177734375,
-0.05126953125,
0.08544921875,
0.0164794921875,
-0.016479492187... | 29 | 29 | |
Hopfield network
From Scholarpedia
John J. Hopfield (2007), Scholarpedia, 2(5):1977. doi:10.4249/scholarpedia.1977 revision #91362 [link to/cite this article]
A Hopfield net is a recurrent neural network having synaptic connection pattern such that there is an underlying Lyapunov function for the activity dynamics.... | 4 | [
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Modes, Medians and Means: A Unifying Perspective
Introduction / Warning
Any traditional introductory statistics course will teach students the definitions of modes, medians and means. But, because introductory courses can’t assume that students have much mathematical
maturity, the close relationship between these thre... | 4 | [
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0.002288... | 31 | 31 | |
Socks and probability
August 23rd 2009, 01:10 AM #1
Newbie
Joined
Aug 2009
Posts
3
Socks and probability
Another question which seems confusing,
There are 4 red socks and 2 blue socks in a drawer. 2 socks are removed at random. What is the probability of obtaining?
a. two red socks b. one of eac... | 4 | [
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-0.06298828125,
-0.0532226562... | 32 | 32 | |
Linear Operators
June 7th 2012, 06:57 AM #1
Member
Joined
May 2008
Posts
140
Linear Operators
Let X be a complex Banach space and T in L(X, X) a linear operator. Let (T* f)(x)=f (Tx), (where x in X, f in X*) define a linear operator T* in L(X*, X*).
Assuming that T is continuous, show that T* is con... | 5 | [
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0.0... | 33 | 33 | |
Homework Help
Posted by Jim on Saturday, May 7, 2011 at 3:05pm.
how many 3-digit numbers can be formed using only the digits 1 to 7, if the number 2 must be included? (Repetitions are allowed)
The books says 127. Could someone please explain this? Thanks
• Math - Reiny, Saturday, May 7, 2011 at 3:29pm
Since r... | 4 | [
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-0.0576171875,
-0.060791015625,
-... | 34 | 34 | |
Re: Re:st: Re: fixed effects vs random effects
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: Re:st: Re: fixed effects vs random effects
From "Rodrigo A. Alfaro" <ralfaro76@hotmail.com>
To <statalist@hsphsun2.harvard.edu>
Subject Re: Re:st: Re: fixed effects vs random effects
... | 4 | [
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... | 35 | 35 | |
Homework Help
Posted by bee on Monday, December 3, 2012 at 10:02pm.
when solving for all solutions how do I work out this problem: cos4(alpha)=cos2(alpha)
and when verifying each identity how do I complete this problem: sin (alpha/2)=sec alpha -1/2sin (alpha/2)sec alpha
• precal - Steve, Monday, December 3, 2012 a... | 4 | [
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0.021484375,... | 36 | 36 | |
How can we distinguish a subset is open?any easy way?
October 3rd 2008, 07:40 AM #1
Senior Member
Joined
Feb 2008
Posts
321
How can we distinguish a subset is open?any easy way?
{ c} in Z, c is a constant integer.
(a,b) in R
[a,b] in R
{a/b} in Q, a/b is a constant rational number.
how... | 4 | [
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E
Use an op amp and a dual SPST to switch signals under digital control.
Liviu Pascu, Kepco, Flushing, NY; Edited by Brad Thompson and Fran Granville -- EDN, 3/30/2006
Many applications require a method... | 4 | [
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0... | 38 | 38 | |
Homework Help
Posted by Lucas on Tuesday, May 15, 2012 at 3:20am.
The sector shown is formed into a cone by joining its two radii. Calculate the volume of the cone correct to the nearest whole number.
It shows a diagram with a 240 degree sector or two-thirds of a circle with a radius of 12 cm.
How do I do this?
Tha... | 4 | [
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Theory Problem: subspaces of vector space
March 15th 2009, 10:04 AM #1
Banned
Joined
Feb 2009
Posts
97
Theory Problem: subspaces of vector space
Let $W_{1}$ and $W_{2}$ be subspaces of a vector space V. Let $W_{1}+W_{2}$ be the set of all vectors v in V such that $v=w_{1}+w_{2}$, where $w_{1}$is in $W_{1... | 4 | [
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-0.029541015625,
-0.00262451171875,
-0.0021... | 40 | 40 | |
Homework Help
Posted by John on Wednesday, March 6, 2013 at 11:59pm.
A circle \Gamma cuts the sides of a equilateral triangle ABC at 6 distinct points. Specifically, \Gamma intersects AB at points D and E such that A, D, E, B lie in order. \Gamma intersects BC at
points F and G such that B, F, G, C lie in order. \Gamm... | 4 | [
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-0.103515625,
-0.07763671... | 41 | 41 | |
Homework Help
Posted by Mary on Friday, April 13, 2012 at 12:04pm.
Please explain to work this:
A rocket is launched from atop a 105-foot cliff with an initial velocity of 156ft/s. the height of the rocket above the ground at time t is given by
h= -16t^2 + 156t + 105. When will the
rocket hit the ground after it is... | 4 | [
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-0.001747131347656... | 42 | 42 | |
Percentile calculations in DAX
As noted by several authors, the percentile measures are not part of the calculations available in DAX. In my opinion, this is a drawback, but on the other hand, making these calculations myself
improved my understanding and control over the whole tabular model.
The starting point for th... | 4 | [
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-0... | 43 | 43 | |
probability!Please help
March 14th 2006, 08:40 PM
mika
probability!Please help
Eight tyres of different brands are ranked from 1 to 8 (best to worst) according to mileage performance. If four of these tyres are selected at random:
a) Find the probability that the best tyre among those selected is actually r... | 5 | [
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A few more log questions
March 31st 2010, 09:34 PM
Paymemoney
A few more log questions
Hi
Need help on the following:
1)Make the independent variable the subject of the equation:
$u(t) = \frac{ae^t + b}{ce^t + d}$
This is what i have done, however i don't understand how the book's answer got $ln... | 5 | [
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Probability and statistics blog
Fantastic map which shows the location of every death on US roads from 2001 to 2009. Go take a look then come back and tell me….
What location did you zoom in on first, and why?
Chances are you’ve already heard about the Monty Hall problem. I wouldn’t be mentioning it at all, except th... | 4 | [
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Homework Help
Posted by anonymous on Sunday, May 2, 2010 at 5:20pm.
I need help solving this problem algebraically, but I need to learn step by step!!
Thanks so much
cos 2x=cos x
How do I do it?
• MATH ANALYSIS - Reiny, Sunday, May 2, 2010 at 5:42pm
you should know that
cos 2x = 2cos^2 x - 1
so we ... | 4 | [
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Homework Help
Posted by Cathy on Thursday, January 15, 2009 at 3:10pm.
In a regular octagon, AB is a diagonal and CD joins the midpoints of two opposite sides. The side length of the octagon is 4 cm. To the nearest tenth of a cm. find a)AB and b)CD. I'm stumped.
• trig - Reiny, Thursday, January 15, 2009 at 3:28pm
... | 4 | [
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0.125,
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Homework Help
Posted by jovahnna on Sunday, June 30, 2013 at 3:44pm.
Factor completely: 3x^2(4x2 + 1)^8 + 64x^4(4x2 + 1)^7.
• pre cal - Tony, Sunday, June 30, 2013 at 3:59pm
x^2(4x^2+1)^7(76x^2+3)
• pre cal - jovahnna, Sunday, June 30, 2013 at 4:01pm
how did you solve this??? I am so los.
• pre cal ... | 4 | [
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0.03759... | 49 | 49 | |
Algebra, Please Help!
Posted by Nicole on Friday, April 20, 2012 at 11:44pm.
Devin attempted to solve the inequality -2x+6>10 following the steps below:
•subtract 6 from both sides of the inequality.
•divide both sides of the inequality by -2.
He finds that x>-2. Clearly explain why this is not a correct solution. ... | 4 | [
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Few homework questions I'm having trouble with.
October 2nd 2008, 08:04 PM #1
Junior Member
Joined
Sep 2008
Posts
40
Few homework questions I'm having trouble with.
Assuming that the series is geometric, find the sum (correct up to 8 decimal places) of the first 25 terms of the following series:
$1-\... | 5 | [
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0.00811767578125,
-0.10253906... | 51 | 51 | |
Homework Help
Posted by lizzie on Tuesday, August 16, 2011 at 7:43am.
Please explain
One factor of x3 + 5x2 + 2x - 8 is (x + 4). Find the remaining factors.
• Algebra - Reiny, Tuesday, August 16, 2011 at 8:00am
perform either synthetic division or long algebraic division of
(x^3 + 5x^2 + 2x - 8) by (x+4) ... | 4 | [
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E12
Impulse Function and Response
The impulse can be represented as the derivative of a step
The figure in the upper left shows a ramp function. As you go to the right T→0, and the function becomes a step. The figure on the left is the derivative of the ramp function - note that it has an
area=1. As T→0, the area rem... | 4 | [
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... | 53 | 53 | |
Absence of internal conical refraction with the spatially dispersive index surface of fluorine; discussion of the orthogonality of the Poynting vector to the index surface
« journal navigation
Absence of internal conical refraction with the spatially dispersive index surface of fluorine; discussion of the orthogonalit... | 4 | [
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Homework Help
Posted by bandit on Wednesday, January 12, 2011 at 6:31pm.
how do i solve this equation algebraicly
solve the equation 1+25cos(x)=25sin^2(x)
• pre-calc - MathMate, Wednesday, January 12, 2011 at 7:01pm
Substitute sin²(x)=1-cos²(x).
This results in a quadratic equation in cos(x). Solve for y=... | 4 | [
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0.0042724609375,
... | 55 | 55 | |
trigonometry. Math
Posted by Melody on Wednesday, January 26, 2011 at 2:12pm.
In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?
• trigonometry. Math - Reiny, Wednesday, January 26, 2011 at 2:23pm
Looks like the "ambiguous case" , or sometimes called the SSA setup, where A is NOT the contained... | 4 | [
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+1 SCIENCE PHYSICS
Posted by FATHIMA on Sunday, August 28, 2011 at 5:23am.
A FROG SAW AN INSECT ON THE GROUND AT A HORIZONTAL DISTANCE OF 30 METER FROM IT. THE FROG CAN JUMP WITH A SPEED 20 METER/SECOND IN ANY DIRECTION. IT JUMPS WITH HIS INITIAL SPEED AND LAND ON THE
INSECT.
A: WHAT IS THA TYPE OF MOSSION MADE BY TH... | 4 | [
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Homework Help
Posted by Matt on Wednesday, July 15, 2009 at 11:27pm.
Prove that a number 10^(3n+1) , where n is a positive integer, cannot be represented as the sum of two cubes of positive integers.
thanx
• Maths - MathMate, Thursday, July 16, 2009 at 6:38am
We will examine the sum of cubes of two numbers, A... | 5 | [
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Quiz 12 problem 2
2. Solve for x and check.
Clear denominators, which, in this case, amounts to cross multiplying.
N(x + a) = M(x + b)
Remove parentheses
... | 4 | [
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Homework Help
Posted by Marvin on Saturday, July 14, 2012 at 3:16am.
a stone is thrown upward from the ground with a velocity of 80 m/s. how long will it take to reach a point 3 m above the ground on its way down?
• Physics - Elena, Saturday, July 14, 2012 at 7:29am
The max height is
H= v²/2g =80²/2•9.8 = ... | 4 | [
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Homework Help
Posted by Michelle on Monday, November 5, 2007 at 10:40pm.
write an eguation in standard form of the that passes through the two points. ( 1,4) ( 5,7) please explain.thanks..
• Algebra 1 - drwls, Tuesday, November 6, 2007 at 12:23am
The slope of the line is (7-4)/(5-1)= 0.75
The equation of ... | 4 | [
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Word problem
September 8th 2009, 02:37 PM #1
Word problem
I need some help and clarifications on such problems. For example:
A student thinks he will succeed on subjects "Probability", "Statistics" and in both of them with the probabilities 0.7, 0.6 and 0.5 respectively. Find the probabilities:
1). p1: T... | 4 | [
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Homework Help
Posted by Sue on Sunday, May 26, 2013 at 10:05am.
The accompanying data show the number of hours, x, studied for an exam and the grade received, y (y is measured in tens; that is, y = 8 means that the grade, rounded to the nearest 10 points, is 80).
x 2 3 3 4 5 5 5 6 6 6 7 7 7 7 8
y 5 5 6 5 6 7 8 6 9 8... | 4 | [
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Conic Derivation
Shodor > Interactivate > Discussions > Conic Derivation
Student: I understand the concepts behind Conic Sections, but how can I graph them algebraically? Are there equations to memorize?
Mentor: You certainly can just memorize the equations, but they're pretty complicated and all four look just simil... | 4 | [
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0.025024... | 64 | 64 | |
Process Capability
The capability of a process is some measure of the proportion of in-specification items the process produces when it is in a state of statistical control.
Process Capability vs. Batch Performance
Process capability is different than batch performance. With batch performance, you are interested in ... | 4 | [
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Discrete Math
Posted by Francesca on Tuesday, April 12, 2011 at 10:55am.
Is this correct?
• Using the Principle of Inclusion-Exclusion, find the number of integers between 1 and 2000 (inclusive) that are divisible by at least one of 2, 3, 5, 7.
A = {n| 1 ≤ n ≤ 2000, 2 |n}
B = {n| 1 ≤ n ≤ 2000, 3 |n}
C = {n| 1 ≤ n ... | 5 | [
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Algebra 2 Linear Programming
Posted by Chauncey on Tuesday, January 22, 2008 at 3:31pm.
I think this is an easy question but i just wanted make sure i have the right answer
Could you check my work
Some students make and sell jewelry in their spare time. Every week they have an avaiable 10,000 beads of various colors... | 4 | [
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Using Modular Arithmetic to Find Remainders
Date: 10/21/2004 at 11:19:02
From: Tahir
Subject: Finding remainders using mod
What is the remainder when 2^(2^405) is divided by 23?
I can't figure out a formula or a general method for solving problems
like these. I solved it by making a chart of initial values and saw
... | 5 | [
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Homework Help
Posted by Kara on Sunday, October 4, 2009 at 7:10pm.
A number magician tells you: : Pick any positive integer and multiply it by 18. Delete one of the non-zero digits of the product. Tell me the sum of the remaining digits of the product and I will
tell you what digit you deleted." Explain this trick.
... | 4 | [
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Homework Help
Posted by Melissa on Saturday, December 17, 2011 at 12:50am.
a ball is dropped from a height of 3m and bounces on the ground . At the top of each bounce, the ball eaches 60% of its previous height. Calculate the total distance travelled by the ball when it
hits the ground for the fifth time
• math - S... | 4 | [
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Trigonometry Identities?
Prove each of the following identities algebraically: a) cos(x) + (cos(x)*tan(x)^2 = sec(x) b) cos(x)(sec(x)-csc(x))=1-cot(x)
cos(x) + cos(x) tan(x)^2 = cos(x) + cos(x) sin^2(x)/cos^2(x) ................. = cos(x) + sin^2(x)/cos(x) = [cos^2(x) + sin^2(x)]/cos(x) ................. = 1/cos(x) = ... | 4 | [
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Homework Help
Posted by ali on Saturday, July 12, 2014 at 12:08am.
Show that a right-circular cylinder of greatest volume that can be inscribed in a right-circular cone that has a volume that is 4/9 the volume of the cone.
• mathe - MathMate, Saturday, July 12, 2014 at 6:21am
Let the cone radius = R
cone h... | 5 | [
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0.0317... | 72 | 72 | |
homework problem
June 17th 2009, 12:57 PM #1
Junior Member
Joined
Jun 2009
Posts
25
homework problem
(a) For any integer n > 2, prove that one can write
n = p+m such that p is a prime number larger than
n/2 and m is an element of Z+. (Hint. You may use Theorem 1.)
(b) Let P = {p|p is prime}... | 4 | [
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0.08... | 73 | 73 | |
Homework Help
Posted by carlo on Monday, March 19, 2012 at 7:25am.
howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the
height of the balloon.
A.if its situated between how... | 4 | [
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Resultant of perpendicular vectors
In grade 10 you learnt about the resultant vector in one dimension, we are going to extend this to two dimensions. As a reminder, if you have a number of vectors (think forces for now) acting at the
same time you can represent the result of all of them together with a single vector k... | 4 | [
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Maximizing volume of an ellipsoid with a given surface area.
December 3rd 2013, 03:54 PM #1
Newbie
Joined
Dec 2013
From
United States
Posts
2
Maximizing volume of an ellipsoid with a given surface area.
I have a problem for my vector calculus class where we have to build a storage tank that is the sh... | 4 | [
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Interesting Theorem Regarding Linear Transformations
Point of post: In this post we discuss an interesting result which tells us precisely when a mapping from one vector space to another is a linear transformation, namely if and only if the graph (to
be defined below) is a subspace of the direct sum of the two vector ... | 5 | [
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... | 77 | 77 | |
Find eigenspace
April 20th 2011, 08:31 PM #1
Junior Member
Joined
Feb 2010
Posts
52
Find eigenspace
Find the eigenspace given
A=
0 3
4 0
I figured square root of 12 can the eigenvalue, not sure if 6 can also be a eigenvalue (can someone please confirm?). I then replugged the eigenvalue ... | 5 | [
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-0.12... | 78 | 78 | |
Homework Help
Posted by Elaine on Tuesday, April 24, 2012 at 8:03pm.
assume that f(x)= x^3(x-2)^2
a) find the x-intercepts algebraically
b) find all the critical points
c) use the first derivative test to determine local minimums and maximums
d)find all inflection points
e)state the concavity of the graph on appr... | 4 | [
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... | 79 | 79 | |
Homework Help
Posted by sh on Thursday, May 28, 2009 at 6:09am.
Prove the identity:
1-cos2x/sin2x = 1+tanx/1+cotx
I simplified the RS to tanx.
LS:(1-2cos²x+1)/2sinxcosx
(2+2cos²x)/2sinxcosx
How do I simplify the rest?
• math - Reiny, Thursday, May 28, 2009 at 7:19am
change the LS to
(1 - (1 - 2sin²x))... | 4 | [
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0.02734... | 80 | 80 | |
Math- Completely confused!
Posted by Jackie on Saturday, August 21, 2010 at 6:02pm.
Simplify each expression (where possible) and write the answer without using negative or fractional exponents. Assume that X>0.
a. 8x^(1/3)
b. (-8x)^(1/3)
c. (8x)^(-1/3)
d. (3x^(3/4))(16x)^(1/4)
e. (x^(1/2)) / (x^(5/2)
so far my ... | 4 | [
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Where does the square come from?
August 7th 2012, 05:16 PM
astuart
Where does the square come from?
I need to find the derivative of the following..
g(t) = ln(t^2e^-t^2)
$g(t) = ln t^2 + ln e^(-t^2)$
= $g(t) = 2 ln t + -t^2$ (ln e = 1, right?)
g '(t)= $2 ( 1 / t ) + (-2t)$
g '(t)= $2 - 2t ... | 4 | [
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Anyone want to verify answers for lagrange multiplier question?
August 7th 2011, 05:06 PM #1
Junior Member
Joined
Sep 2010
Posts
36
Anyone want to verify answers for lagrange multiplier question?
Would all be helping me out here alot
Find the local maxima and minima of the following function:
$... | 4 | [
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0.05029296875,
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... | 83 | 83 | |
Homework Help
Posted by Jinal on Sunday, June 3, 2007 at 10:38pm.
can sumeone plz help me find the derivative of (2x^2 - 12x -2) / ((x^2 + x - 2) ^ 2)
thx a lot
Use the following rule:
derivative of u(x)/v(x) =
[v du/dx - u dv/dx]/ v^2
In your case, du/dx = 4x - 12;
dv/dx = 2 (x^2 + x -2)*(2x +1)
v^2 = (x^2 + x... | 4 | [
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[SOLVED] Geometric distribution
February 28th 2009, 09:29 AM #1
[SOLVED] Geometric distribution
Hi !
I'm doing an exercise, where I'm pretty stuck
So here it is.
Recall that if Y follows a geometric distribution (parameter p), then $\mathbb{P}(Y=k)=(1-p)^{k-1}p$, for $k \geqslant 1$.
Let $(X_k... | 5 | [
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Area of region
October 20th 2011, 01:08 PM #1
Member
Joined
Aug 2011
Posts
117
Area of region
Basically, what i have is
$V = 2 \pi \int _{o}^ {4} (4-x) \, \sqrt x \, dx$
would i then distribute?
$V = 2 \pi \int _{o}^ {4} (4x^{1/2} -x ^{3/2} ) dx$
Then, integrate?
$2 \pi \int _{... | 4 | [
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... | 86 | 86 | |
Homework Help
Posted by indu on Thursday, July 3, 2008 at 11:49am.
an amount gets doubled in 15 years with compund intrest.In how many years amount will become 8 times,using the same compund intrest ?
• maths - tchrwill, Thursday, July 3, 2008 at 12:06pm
an amount gets doubled in 15 years with compund intrest.... | 4 | [
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Homework Help
Posted by Lucy on Saturday, March 8, 2008 at 7:29pm.
Thomas can do a job in 4 hours. Julia can do the same job in 6 hours. How many hours will it take the two of them to do the job it they work together?
• Algebra II - Ms. Sue, Saturday, March 8, 2008 at 7:40pm
With two of them working together, ... | 4 | [
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Equation of plane.
August 20th 2008, 12:09 PM
BogStandard
Equation of plane.
Find the equation of the plane which passes through the points A(-1,-3,1), B(1,-2,0) and C(2,1,-1).
Calculate the shortest distance between the plane and the origin of the coordinate system.
August 20th 2008, 12:21 PM
galactus
... | 5 | [
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-0.070... | 89 | 89 | |
calc 1 question
June 9th 2008, 11:18 AM
weezie23
calc 1 question
point moves along a curve y=2x^2+1 in such a way that the y value is decreasing at the rate of 2 units per sec. at what rate is x changing when x=3/2.
y' = 4x so F'(3/2)= m = 6
so slope=6 and f(3/2) = y= 11/2
point slope formula = y-(... | 4 | [
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Homework Help
Posted by Jessie on Thursday, January 24, 2008 at 4:36pm.
I need to find the derivative of the following problem via logarithmic differentiation, but I'm getting stuck. I know how to solve via logarithmic differentiation, but I can't figure out how to
re-write the exponent(s) as logs. Could someone help ... | 5 | [
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4 Math Questions
January 5th 2009, 12:34 PM
dgenerationx2
4 Math Questions
5. Last year Manny Kows bought 3 steers for 74 cents a pound, their total weight was 1,410 pounds. This year he sold these same steers for 65 cents a pound, their total weight was 3,465 pounds.
What information do you need to look at ... | 4 | [
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0... | 92 | 92 | |
A colony of bacteria..
Number of results: 911
Algebra
Which of the following is an example of exponential growth or decay? A. a colony of bacteria staying constant in quantity each week B. a colony of bacteria doubling in quantity each week C. a colony
of bacteria increasing by 100 in quantity each week D. a colony of... | 4 | [
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20: Scalar Numerical Functions
Chapter 20: Scalar Numerical Functions
In this chapter we look at built-in scalar functions for computing numbers from numbers. This chapter is a straight catalog of functions, with links to the sections as follows:
Ceiling Conjugate cos cos^-1 cosh cosh^-1
D... | 5 | [
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0.00260925292... | 94 | 94 | |
Generating Gaussian Random Numbers
We do the math so you don't have to!
Generating Gaussian Random Numbers
This note is about the topic of generating Gaussian pseudo-random numbers given a source of uniform pseudo-random numbers... | 4 | [
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Homework Help
Posted by Taylor on Monday, February 13, 2012 at 12:00am.
I don't get two questions out of my homework and I know the answers to them but just not how the answers were gotten. PLEASE HELP!!
1) A handbook gives the aqueous solubility of carbon monoxide at 0 C and 1 atm CO pressure to be 0.0354 mg CO per ... | 4 | [
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Homework Help
Phys Science - tchrwill, Thursday, July 21, 2011 at 1:08pm
<<How does the acceleration due to gravity vary over the earth's surface?>>
As we normally think of it, the static value of gravity on, or above the surface of a spherical body is directly proportional to the mass of the body and inversely propo... | 4 | [
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Triple Integral
April 23rd 2009, 11:55 AM
Showcase_22
Triple Integral
Quote:
Let $\Omega$ be the three dimensional region defined by $\Omega:=\{(x,y,z)| z\geq 0, x^2+y^2 \leq z^2 \leq 1-x^2-y^2 \}$.
a). Sketch the region $\Omega$
b). Evaluate $\int \int \int_{\Omega} dx \ dy \ dz$
Hint: It may... | 4 | [
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Homework Help
Posted by Andres on Wednesday, October 12, 2011 at 8:04pm.
A farmer wishes to enclose a rectangular pen with area 100 square feet next to a road. The fence along the road is to be reinforced and costs $34 per foot. Fencing that coast $16 per foot can be used
for the other three sides. What dimensions for... | 5 | [
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