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

Feb2313 09:24 AM
micromass

1 
46,192 
How to do integral for Cos(x^2)dx? Is there a chain rule for integral? Coz sometimes when I approach questions like...

Dec912 11:44 AM
sentinel

18 
143,864 
Once again I've faced a complete dead end in trying to solve the pi function so I thought I may share my work so if...

Dec1012 12:44 PM
tanus5

3 
1,278 
Hello,
This limit
\lim_{x \to 0} \frac{ \sin x}{x}
is often cited as being an example where L'Hopital's rule...

Dec912 10:56 AM
lavinia

8 
1,673 
I don't have a ton of experience in numerical methods, so I'm hoping someone can help me out. Suppose I have a...

Nov2512 08:21 PM
Stephen Tashi

6 
1,194 
My textbook states
J_v(x) J'_{v}(x)  J'_v(x) J_{v}(x) = \frac{2 \sin v \pi}{\pi x}
My textbook derives...

Dec312 08:47 PM
mjordan2nd

4 
2,355 
Reading through Spivak's Calculus on Manifolds and some basic books in Analysis I notice that the divergence theorem...

Nov2812 09:54 PM
mathwonk

5 
1,269 
Hello:
I have been trying to solve the following equation on MathCad or Excel, however its been quite a struggle :(...

Nov2612 06:53 AM
paula1980

7 
947 
So I've been practicing several series that can be solved using the alternating series test, but I've came to a...

Nov3012 07:19 AM
HallsofIvy

4 
1,144 
In many of my physics classes we have been using Taylor Expansions, and sometimes I get a bit confused. For example,...

Nov2812 10:44 PM
lurflurf

3 
876 
After doing my homework on testing for convergence/divergence in infinite series, I noticed that if you are testing...

Dec112 10:22 AM
Klungo

4 
858 
Is there any way to solve Fredholm integral equation without using Fourier transform....

Nov3012 03:40 PM
mathman

1 
684 
Hi y'all.
Here is exactly what is stated on the theory page of my book:
Example: Area of a Region
The area of a...

Dec312 09:01 PM
Kushwoho44

2 
837 
I'm having a conceptual problem with integrating a function and thought someone might enlighten me.
Say you have a...

Dec212 03:23 AM
DiracPool

5 
888 
hello,
Please see attached excerpt of a solution to a problem. I do not understand why the result obtained is to...

Dec312 01:18 PM
zn5252

4 
829 
I've been working my way through Intro to Electrodynamics (Griffiths), and in Chapter 3, one of the derivations comes...

Dec212 06:18 PM
Gibby_Canes

4 
877 
i facing a maths problem in integrating ∫ cos^2(∏/2cosθ) with limit from 0 to ∏/2,i was panic and struggled a long...

Dec312 04:32 PM
Mute

8 
1,193 
Hello there,
I have the function
$$f(t) = \int_0 ^{t} \frac{1}{\sqrt{t\tau}} \mathrm{d}\tau$$
The integral...

Dec412 01:53 PM
lavinia

3 
851 
As the title obviously states, how can I evaluate this integral by hand ? I know the result of it, I need to learn how...

Dec612 02:13 PM
swle

8 
1,102 
If i have a point at (0,0,5) in x,y,z system, then i make 2 rotation on the point with center at origin.
i)the first...

Dec712 01:37 AM
hei

6 
1,359 
I recently thought to myself about how a slight modification to the taylor series of e^x, which is, of course:
...

Dec1012 04:50 AM
mdo

9 
1,175 
Is it possible to do integrals like this with eulers formula
\int e^{x^2}cos(x^2)
and this integral is over...

Dec512 07:42 AM
lurflurf

1 
477 
guys,
we know ∇q=qi,j and ∇ ∇.q=qi,ij
but what will happen if we have qi,jqm,mj ? (sum on j)
I know...

Dec512 03:18 PM
Romik

0 
733 
hi,
Reading a book on thermodynamics and the guy often uses something like this :
∫1/T dQ = ΔS
and then he...

Dec712 05:37 PM
tinytim

7 
870 
When I attempt to use the method of integration by parts on the below integral, I don't get anywhere since I only...

Dec612 07:10 PM
Mark44

6 
858 
Today we learnt tabular integration as a shortcut method for integration by parts. Is there a proof that legitimizes...

Dec612 06:04 PM
Vorde

1 
1,186 
I have a question to ask, is dx = δx, can they cancel each other like \frac{dx}{δx}=1
and is it mean that:
...

Dec712 04:29 PM
destroyer130

5 
1,223 
I am a woodworker, and am designing a two part magnetic/spring lock for my blanket chest. The first part has 3 master...

Dec1012 09:15 AM
Vargo

3 
768 
I was trying to do 2d Fourier transform of 1/k^2 in 2d. I know that answer is log r. I am not able to derive it.
...

Dec612 11:22 PM
navaneethjnc

0 
733 
I have got this integration:
\int_{1}^{1}\frac{x^n}{(1+w^2P^22wx+p^2x^2)^2}dx
And at the same time, I can provide...

Dec712 01:28 AM
Wu Xiaobin

0 
529 
Recently I have been working on classical Gaussian electrical field and I come through this joint
moments...

Dec712 01:58 AM
Wu Xiaobin

0 
766 
I need to take the integral of the following function over one cycle.
y(t) = sin(wt)cos(wtp)
p is a phase...

Dec712 03:11 PM
mathman

1 
650 
Why Poisson kernel is significant in mathematics? Poisson kernel is ##P_r(\theta)=\frac{1r^2}{12rcos\theta+r^2}##....

Dec712 12:44 PM
matematikuvol

2 
615 
Hi All,
I have a problem involving some special functions (MeijerG functions) that I'd like to approximate. At...

Dec912 06:29 PM
bpet

5 
1,149 
I've been wanting to learn physics for a while, and bought an intro book and read through it. Now I want to move onto...

Dec812 03:39 PM
Thetes

2 
751 
We all know about the famous equation: \int_{\infty}^\infty e^{x^2} dx=\sqrt{\pi}.
How about...

Dec1012 12:36 AM
JJacquelin

7 
959 
How do I evaluate the sum of this sigma notation problem?
20
∑ k
k=10
Normally, I would think to use the...

Dec912 11:38 PM
haruspex

2 
1,077 
Hi, I'm trying to work with the BiotSavart law to look at the magnetic field strength along the center of an...

Dec1012 07:07 AM
lavinia

3 
1,141 
Hi Guys,
I remember back in the days of Calc I learning that there was an easy way to take multiple derivatives of...

Dec1012 07:00 AM
jedishrfu

3 
1,541 
Just a few definitions I would like to verify so I'm not studying the wrong stuff.
Interior Point : A point Q \in S...

Dec1012 10:45 AM
Zondrina

2 
586 
given
∫(25) f(x)dx=5 and ∫(45) f(x)dx=∏ , find
a)
∫(55) f(x)dx =
b)
∫(54) f(x)dx =

Dec1012 11:57 AM
jeckel7234

2 
835 