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

Feb2313 09:24 AM
micromass

1 
45,126 
Hey guys,
I was doing some practice questions and this particular one has me stumped. The topic was on integration...

Oct109 03:01 PM
2^Oscar

6 
1,219 
I've done the following short calculation, but I'm not really sure if it is correct or maybe I missed something:
...

Oct109 02:31 PM
parton

0 
759 
It seems like zeta(n) = (pi)^n / (some number), for even integers n. Can anyone point me to a proof of this?

Oct109 03:18 AM
dalle

1 
738 
I can't remember much from my intro. analysis class anymore.
If you have an infinite series that ultimately...

Sep3009 10:53 PM
Bohrok

1 
1,355 
I want to prove orthogonality of associated Legendre polynomial.
In my text book or many posts,
\int^{1}_{1}...

Sep3009 07:20 PM
ice109

1 
1,359 
My question is best stated by using an example:
Suppose f is a function defined only for rational x, and for...

Sep3009 09:37 AM
lurflurf

2 
901 
lim as h>0 ((h^2) + 4h )/h comes out = 4 when i do it by splitting the definition of function according to modulus...

Sep3009 08:23 AM
tinytim

1 
1,271 
Hi, I'm almost at the end of a question but i seem to be stuck. I have the answer though.. so im up to here so can...

Sep2909 08:28 PM
mathman

4 
832 
Hi,
I've been reviewing multivariable calculus, which I took ages ago, and trying to understand the concept of a...

Sep2909 04:11 PM
LCKurtz

3 
1,273 
This a techniques of integration question, and I'm wondering how do you know when to use integration by parts on a...

Sep2909 03:32 PM
Miss_AnnA

4 
15,749 
I have been going over some lecture notes and have some questions about some of the mathematics shown in these notes....

Sep2909 09:10 AM
ryan88

6 
1,089 
Hi!
I was wondering why the following integral does exist (where the integrands are considered as distributions):
...

Sep2909 08:54 AM
parton

0 
1,335 
I am soooo lost. I don't even know if this is the right forum. But where is the bridge between Calculus and Physics?...

Sep2909 08:03 AM
thrillhouse86

5 
871 
How is Extreme Value Theorm correct for a constant function such as y=1 , where is the maximum and minimum????????

Sep2909 07:38 AM
vikcool812

2 
804 
Hey
I have this problem on proof by induction that I'm struggling to do.
The problem is to prove the nth...

Sep2909 01:08 AM
Sam223344

4 
4,911 
Hey, im having trouble understanding how you can transform one set of coordinates into another using partial...

Sep2809 03:38 PM
tinytim

1 
737 
F(q_1,...,q_n,t)
\frac{d}{dt}\frac{\partial}{\partial \dot{q}} \frac{dF}{dt} = \frac{\partial}{\partial q}...

Sep2709 10:18 AM
HallsofIvy

1 
765 
can someone please convince me that lim x>0 sqrt(x) = 0
Who of you say it doesn't exist???

Sep2709 10:00 AM
tinytim

4 
1,254 
Hi guys, this is my first post but have read the forums for a long time  a quick search didnt bring up anything that...

Sep2709 04:31 AM
austeve

3 
1,598 
Question is in orange, answer is in black.
http://i37.tinypic.com/2hhen4i.png
I got no idea how they got this...

Sep2709 02:55 AM
tinytim

4 
873 
dy = lim \Deltax>0 (f(x+\Deltax)  f(x))
dx = lim \Deltax>0 (\Deltax)
Therefore dy/dx is f'(x) if f(x) = y
...

Sep2609 05:42 PM
kotreny

7 
2,635 
Hi all,
First post here for me.
1. Problem Statement
Find the fundamental period of:
3cos(1.3PiN) ...

Sep2609 04:33 PM
mbanghart

0 
3,788 
Hi.
Can anybody give me a reasonably simple explanation of what the purpose of each of the "operators", divergence,...

Sep2609 01:43 PM
niloy

12 
12,320 
I have a bone to pick with the standard proof of the closed interval in R being compact with respect to the usual...

Sep2509 08:58 PM
LCKurtz

3 
928 
I would like to know if there's a counterpart to the single variable theorem, that if f is a differentialble function...

Sep2509 08:42 PM
Office_Shredder

2 
927 
Hi,
Say f:A>A where A is a metric space and f is onto. I think it should be true that this implies that f is also...

Sep2509 08:41 PM
ice109

5 
1,473 
Hi,
If A and B are two metric spaces and there exists two onto functions F and G such that F:A>B and G:B>A, is...

Sep2509 08:20 PM
quasar987

1 
794 
Any web resources regarding changing the variable of integration from cartesian to polar coordinates that goes beyond...

Sep2509 01:50 AM
tinytim

10 
2,362 
Say, you have a line that divides the complex plane into two parts, one contains the poles and the other one doesn't....

Sep2409 06:48 PM
John Creighto

2 
683 
I came across this example on the net :
We are integrating over the region that is the area inside of r = 3 + 2 sin...

Sep2409 06:41 PM
LCKurtz

5 
1,241 
Hi all,
Quick question I haven't been able to find the answer to anywhere:
Can I use exterior calculus for...

Sep2409 03:55 PM
mrentropy

15 
1,999 
Is this what it is:
"For every \epsilon > 0 there exists x\in A such that x \leq \inf A + \epsilon."
...and...

Sep2409 01:52 PM
snipez90

5 
4,617 
Am I correct in assuming that you can make sense of \infty + \infty and \infty + c for any c\in \mathbb{R} (both...

Sep2409 12:05 PM
rasmhop

1 
660 
is this relashion true? or false?
if it is true how can I proof it?
(i)^(m) = cos((m*pi)/2)+i*sin((m*pi)/2)

Sep2409 10:52 AM
dado033

3 
617 
Hi,i would be gratefull if anyone could help me with this problem.
\frac{2}{\pi}\int \frac{cos(ux)}{\sqrt{x}} dx
...

Sep2409 10:39 AM
nemanja

4 
791 
Consider this indefinite integral:
\int(x^2+6)(2x)dx
There are two ways I could approach solving it. The first...

Sep2309 04:44 PM
tinytim

2 
707 
Hey all,
Im hoping this is going in the correct place.
Im actually working on a script and realized that ive...

Sep2309 04:22 PM
tinytim

1 
684 
does anyone know how to calculate (in the sense of distribution) the Fourier transform of
f(x)= lnx
that is...

Sep2309 02:45 PM
John Creighto

7 
7,161 
For what x does cos(x) = x ?

Sep2309 01:38 PM
LCKurtz

1 
641 
when is it justified to do something like this
\lim_{n\to\infty} e^{lnx^{1/n}} =...

Sep2309 11:35 AM
Caesar_Rahil

3 
760 