
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:24 AM
micromass

1 
44,425 
If I have a finite boundary, say of length L. Is it possible to demonstrate that if I were to allow all possible...

Feb2308 09:18 AM
robousy

9 
1,812 
A hemisphere shaped tank with vertical outlet pipe is full of mysterious liquid. Find the work required to pump the...

Nov2610 09:07 AM
HallsofIvy

1 
1,812 
\lim_{n\rightarrow \infty} \frac{2^{3n}}{3^{2n}}
The answer is zero. All I can do is turn this infinity/infinity...

Oct1804 11:30 PM
Tide

10 
1,811 
I am having a problem with a question from my calc 3 class. I don't think there is any calculus involved, however. So...

Sep2708 04:26 PM
laluser

2 
1,811 
Hi!
I am supposed to write the hyperboloid x^2 + y^2  z^2=1 as a parametric funktion and find an expression for the...

Feb1004 04:19 AM
LostInSpace

6 
1,810 
Thoughts:
V=\frac{1}{3}\pi r^{2}h=\frac{1}{3}\pi (\frac{4}{5}h)^{2}h
\frac{dV}{dt}=\frac{16}{25}\pi...

May605 08:45 AM
kleinwolf

1 
1,809 
Sketch the level curves in the xyplane of f(x,y)=3yx^2 for k=0,2,4.
Anyone mind helping/teaching me how to...

Jul207 04:22 PM
Proof.Beh

4 
1,809 
Hey..This is a question I am having difficulty in solving.
4x\angle2x+1\leq3x+2
First I removed the "1"from the...

Jan1408 06:37 PM
Tom Mattson

3 
1,809 
I have attached a pdf of output from MAPLE attempting to evaluate an integral of an exponential function containing a...

Jan1910 01:36 PM
tsunamiBTP

3 
1,809 
If we integrate a vector field over a surface, \int_S \vec{F} \cdot \vec{dS}, we get the flux through that surface....

Jun1910 02:45 PM
thojrie

5 
1,809 
The definition of this function is
Gamma(z) = integral(0, inf)(t^(z1)e^(t) dt)
Well, I can't understand what...

Nov2904 10:55 PM
Tiiba

2 
1,808 
I'm having trouble following the proof of the IFT by Spivak. The statement of the theorem was posted in a similar...

Feb2711 11:02 AM
jambaugh

1 
1,808 
I am wondering is there any general analytic solutions to the following integrals
First moment of area...

Jan2112 06:51 AM
dragozarkovic

3 
1,807 
I've attached the .pdf from which I have questions.
After it says "Take the square of the numerator" halfway down...

Sep2512 03:55 PM
Simon Bridge

7 
1,806 
so I have a semi circle that goes from
\frac{5\pi}{4} to \frac{\pi}{4}
so the angle between the x axis the...

Nov1209 09:37 AM
LumenPlacidum

1 
1,805 
Hi PFers,
What I'm referring to is on p. 32 of Pugh's Real Mathematical Analysis. (trying to begin study early for...

Feb1208 08:04 PM
HallsofIvy

3 
1,805 
can anyone give me a simple explanation what fourier analysis is all about? i have read wiki and it is a little...

Sep2311 08:32 PM
quietrain

8 
1,804 
What restrictions must we place on a realvalued function F for
F(x) = \frac{d}{dx} \int_a^x F'(y)dy
to...

Mar2210 02:46 AM
snipez90

3 
1,804 
Can somebody give me an example whereby I use the inversion with respect to a circle (unit circle or otherwise) and...

Sep2410 11:22 AM
HallsofIvy

1 
1,804 
I know that legendre polynomials are solutions of the differential equation is (1x^2)d^2y/dx^2  2x dy/dx+l(l+1)y=0...

Apr904 05:40 AM
matt grime

2 
1,803 
I am a little shaky with the concept of proving uniform continuity vs regular continuity. Is the difference when...

Oct1104 11:01 PM
Hurkyl

1 
1,803 
What does the notation \partial \betaD\alpha
mean? I came across it in General Relativity, so I think it's the set of...

Feb809 09:12 AM
HallsofIvy

3 
1,803 
I'm reading through a proof (the full theorem statement is at the bottom of the post) in a book on probability and I'm...

Feb2011 03:03 AM
JFo

1 
1,803 
I came across this proof and have a question about the bolded portion:
Consider the following objection to...

Jan712 10:38 AM
spamiam

10 
1,803 
let,s use some of game theory...let,s suppose we have a game played by n players with k parameters given by the...

Aug1905 04:51 PM
TD

2 
1,802 
This is page #293 of the 1st volume from 2nd edition of Apostol's "Calculus & Linear Algebra".
Well, the...

Aug1506 09:50 AM
Office_Shredder

14 
1,802 
This has been posted before although I've come across it and got a differant answer from...

Oct2806 02:34 AM
CDevo69

6 
1,802 
I'm trying to find the partial derivative of Q with respect to w0 and then set it equal to 0 and solve for w0. Finding...

Mar1411 04:00 PM
bpk356

1 
1,802 
Hi to all of Physics forums community :),
I'm not sure whether or not I am in the right section. If not, I...

Oct1411 12:03 AM
MarcL

9 
1,800 
Here are two cool functions defined by power series:
...

Nov1505 07:58 PM
benorin

4 
1,800 
The base of a coneshaped tank is a circle of radius 5 feet, and the vertex of the cone is 12 below the base. The tank...

Oct2207 10:55 PM
Feldoh

1 
1,800 
I am trying to understand the definition of the inner product of two functions on an interval. I know that the form of...

Nov1909 02:00 PM
Prologue

14 
1,800 
I was wondering, if you have a nonconservative vector field (so that the line integral of each path from point A to...

Dec2510 05:35 AM
elibj123

5 
1,800 
How can I "easily" solve or understand the application of derivative involving the rate of change?

Jul2304 09:13 PM
mathwonk

10 
1,799 
Hello,
I have the following equation
\int \!v{dv}={\it GM}\,\int \!{y}^{2}{dy}\]}
Integrating I get...
\}

Oct2505 05:10 PM
opticaltempest

7 
1,799 
I was reviewing basic calculus of of functions of several variables. It struck me that in one of the exercises, it was...

Nov611 07:53 AM
Useful nucleus

5 
1,799 
Hi everyone,
I am working on simplifying a differential equation, and I am trying to figure out if a simplification...

Dec2912 06:33 PM
yayyyymath

8 
1,799 
I am having trouble finding the area between 2 polar curves..... I have the procedure down, but the bounds are...

Jul1505 04:33 AM
itzela

2 
1,798 
Okay. The problem I have is:
Let {x_n} be bdd and let E be the set of subsequential limits of {x_n}. Prove that E...

Oct1806 03:36 PM
mathman

3 
1,798 
I've seen this formula stated and used, ( in a stanford university video lecture)
\int \frac{dA}{dt}B\ dt = ...

Feb410 01:32 AM
ExtravagantDreams

6 
1,798 