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

Feb2313 09:24 AM
micromass

1 
45,368 
Trying to show any f(z)=u(x,y) + i*v(x,y) with the 3 properties:
1. f(x+0*i)=e^x,
2. f(z) is entire,
3. f '...

Mar311 02:25 PM
Mark44

3 
646 
Hello all,
Given two 3D lines described by the general equation
\vec{L(t)}=\vec{p}+\vec{d}t
I found a way to...

Mar311 12:45 PM
Goongyae

2 
1,970 
Hi  I'm trying to work out the following convolution problem:
I have the following integral:
...

Mar311 09:53 AM
thrillhouse86

2 
1,757 
lets say i have a parameterized curve r(t)
if i do r'(t), is it the same as if i were to do a partial...

Mar311 08:23 AM
quietrain

4 
1,008 
In my calculus book, the method of increments is used to find the derived function of the product and quotient of two...

Mar311 01:56 AM
physicsnnewbie

3 
2,532 
Hi All,
I have a rigidbody simulation and I'm trying to calculate the local angular velocity of the object using...

Mar311 01:42 AM
Goongyae

4 
3,370 
so I just introduced myself to the concept of integration by parts a few days ago, and today for practice I decided to...

Mar211 09:03 AM
atomthick

5 
5,355 
I need to integrate the function 1/(X^7 + x) which simplifies to 1/x(x3 + 1)(x3  1) or any other problem where the...

Mar211 12:33 AM
Goongyae

4 
1,078 
I have a question about the Remark on the page posted. When it says "If γ and all its derivatives take the same value...

Mar111 08:01 PM
Goongyae

4 
751 
I wish to expand the following in powers of 1/R :
1/r1 + 1/ R+r2r1  1/ R+r2  1/ Rr1
...

Mar111 03:20 PM
Goongyae

5 
1,450 
Hello  I want to solve a very general type of minimization problem. I have 2 rigid bodies (e.g. molecules) which are...

Mar111 01:51 PM
nitroamos

2 
720 
Am just playing around, and
following examples of Fourier transform solutions of the heat equation, tried the same...

Mar111 09:06 AM
ajit_up

6 
8,478 
I have a question about the variable changes in the proofs of Proposition 1.3.4 and Proposition 1.3.6. In the first...

Feb2811 10:05 PM
Buri

8 
1,137 
Kreiszig: Introductory Functional Analysis with Applications, example 1.39, states that the metric space l^{\infty}...

Feb2811 06:54 PM
Rasalhague

6 
1,835 
First, some definitions:
We use  \cdot _2 to denote the 2norm.
The isotropic Gaussian kernel in R^2 ,...

Feb2811 10:02 AM
bee225

0 
2,456 
Hey,
can anyone please point me to a reference for the Hilbert transform of the form:
f(t) = \exp \{ i\mu t ...

Feb2811 06:36 AM
thrillhouse86

0 
1,697 
I have a number of books which give a vector identity equation for the curl of a cross product thus:
\nabla \times...

Feb2711 07:33 PM
lurflurf

3 
5,941 
Hello,
I haven't been able to find a good book.
Could you please suggest some good books with solved exercises...

Feb2711 02:37 PM
FunMath

5 
2,299 
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 
1,816 
Hi

I want to integrate this integral and ask if my work is correct or not.
\int^\infty_0 dx x^{\alpha1}...

Feb2711 10:50 AM
HallsofIvy

1 
701 
Hello, I would like to plot fixed points with corresponding basins of attraction in Matlab. I am having a system of...

Feb2711 07:36 AM
sscnekro

0 
1,161 
My functional analysis professor made the following assertion the other day: If f_n \to f in the L^2 norm, then there...

Feb2711 07:34 AM
micromass

1 
4,593 
$\frac{d}{dp}(\Vert f\Vert_{p}^{2})\mid_{p=2}=\frac{d}{dp}((\int_{\mathbb{\mathbb{R}}^{n}}\mid...

Feb2711 03:00 AM
Char. Limit

1 
694 
I'm trying to find the function f which maximizes this integral:
...

Feb2611 08:41 PM
mistergrinch

0 
637 
Thomas calculus Chapter 15, section "additional and advanced exercises" exercise 8 says:
"Sphere and cylinder" Find...

Feb2611 11:04 AM
matiasmorant

2 
1,868 
I am confused about integration in other cases, I understand that you can use substitution if the derivative exists...

Feb2611 08:24 AM
dextercioby

4 
1,682 
Ok so for a sequence x(n) to be bounded it means x(n)<=M
but according to by book, if x(n) belongs to some...

Feb2611 06:54 AM
HallsofIvy

4 
2,725 
If a function is even, prove that the derivative is odd.
Look at a graph of x^2 we can clearly see why.
This is...

Feb2511 02:03 PM
izilude

4 
22,658 
Hello all,
I joined this amazing forum just today.I hope that my question will get answered soon.
So here it is.I am...

Feb2511 02:47 AM
chempinaki

1 
1,505 
I want to compute kind of following problems.
int(from 0 to infinity) e^(x) / (x1) dx= I
using contour...

Feb2411 09:56 PM
qlsn4123

2 
1,030 
my book defines an orientation preserving parametrization of a manifold as one such that:
Ω(D1γ(u), ..., Dkγ(u)) = +1...

Feb2411 07:32 PM
demonelite123

2 
1,376 
Given two functions f_{1}(x) and f_{2}(x) that are differentiable on and \int^{a_2}_{a_1}f_1(x)f'_{2}(x)dx=b_2, how...

Feb2411 04:14 PM
mjpam

3 
1,350 
Hi!! I am an amateur to the world of calculus....
I have a doubt with the limits in case of functions which are...

Feb2411 12:12 AM
Ashu2912

4 
1,839 
In calculus when you learn solids of revolution in relation to surface area or volume is there any specific uses that...

Feb2311 10:27 PM
Unrest

1 
1,321 
Hello. I have a function which doesn't work near A=0. I want to change it to something that a computer can evaluate...

Feb2311 10:09 PM
Unrest

4 
859 
Question 1: Can someone please explain to me on page 2 how is it that the inequality halfway through the page...

Feb2311 06:51 PM
Buri

11 
1,584 
According to wiki
"The derivative of a function at a chosen input value describes the best linear approximation of...

Feb2311 04:08 PM
Hurkyl

28 
3,490 
For a kinematic problem I obtained the following equations:
p1= r*sin(theta_c)  d*cos(psi_a)*sin(theta_a)+c1...

Feb2311 02:49 PM
azizz

2 
860 
Well  im a 16 year old student, whos really interested in math. I do a lot of studying on my own, because im a bit...

Feb2311 12:56 PM
Levis2

5 
2,214 
Hi all,
I was just wondering if a function that is continuous and differentiable for all xεR, but where the domain...

Feb2311 10:48 AM
SprucerMoose

6 
1,226 