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

Feb2313 09:24 AM
micromass

1 
46,100 
First I need to post some pages of a book that I'm reading...
http://img824.imageshack.us/img824/5153/42785753.png...

Aug2510 01:48 PM
HallsofIvy

4 
1,039 
Hi!
I'm trying to understand how do i get the phase spectrum from a Fourier Transform. From this site
...

Aug2510 02:41 AM
Petr Mugver

7 
5,323 
Hi
I'm now reading about Vector fields, everything is clear and intuitive for me as curl divergence ..ect , except...

Aug2310 09:29 PM
qbert

26 
3,685 
where do a multiple Taylor series converge ??
i mean if given a function f(x,y) can i expand this f into a double...

Aug2310 03:31 PM
mathman

1 
1,686 
why are ther Taylor series in several variables (x_{1} , x_{2} ,....., x_{n} but there are NO Laurent series in...

Aug2310 02:54 PM
zetafunction

4 
2,484 
http://planetmath.org/?op=getobj&from=objects&id=4370
that's pretty much the proof of Stolkes Theorem given in Spivak...

Aug2310 05:39 AM
quasar987

1 
1,655 
I am looking for math software that will fit a set of points with a cubic spline (or other technique)....then allow...

Aug2310 04:32 AM
The legend

9 
2,243 
Let X be compactly embedded in Y. Assume also that
there is a sequence f_n in X such that
f_n converges to f weakly...

Aug2110 03:39 PM
NSAC

2 
1,971 
Consider the real function f(x,y)=xy(x2+y2)N,in the respective cases N = 2,1, and 1/2. Show that in each case the...

Aug2110 01:12 AM
Hurkyl

3 
1,182 
I was thinking how do I differentiate the domain of functions...
Suppose I have a function:
f(x) =...

Aug2010 02:44 PM
statdad

4 
1,430 
ehhh

Aug2010 11:25 AM
slider142

7 
1,602 
Here is a different way I (think I) proved that the derivative of e^x is...

Aug2010 11:18 AM
Mute

4 
1,231 
I know it's trivial....but how do you find the Fourier series of sin(x) itself? I seem to get everything going to...

Aug2010 02:51 AM
QuantumPhenom

8 
38,559 
This question comes from Theorem 16.3 of Bartle's "The Elements of Integration and Lebesgue Measure", in page 163. The...

Aug1910 08:36 PM
adriank

2 
1,923 
\operatorname{div}\,\mathbf{F}(p) =
\lim_{V \rightarrow \{p\}}
\iint_{S(V)} {\mathbf{F}\cdot\mathbf{n} \over V }...

Aug1910 06:32 PM
arildno

3 
3,958 
Consider the function g(t) = f(t)/t on , where f is measurable on . Does it follow that g is measurable on ? I know...

Aug1910 02:22 PM
Landau

2 
994 
I understand that showing \mathbb Q is not a G_\delta set is quite a nontrivial exercise, involving (among other...

Aug1910 01:36 PM
adriank

5 
2,403 
How do I integrate sin(x^2) please?
Not (sin(x))^2. Thanks again

Aug1910 11:23 AM
Char. Limit

9 
1,716 
In spherical coordinates, you have one angle that goes from 0 to \pi and one that goes from 0 to 2 \pi. I'm having a...

Aug1910 09:44 AM
NanakiXIII

4 
2,391 
Hey people can someone point out to me please where I'm going wrong with part B of this question, can't get it to look...

Aug1810 06:41 PM
luckyducky87

4 
3,600 
I'm reading about lateral derivatives...
I know that a function is said derivable on a point if the lateral...

Aug1810 06:13 PM
Taturana

4 
2,686 
Hello all,
I am currently studying multivariable calculus, and I am interested in the Taylor series for two...

Aug1810 09:11 AM
adoado

4 
5,580 
I'm not even sure if that's the right name, but my question is when you have a \delta under the integral.
For...

Aug1810 08:59 AM
Mute

10 
2,161 
Wikipedia shows a proof of product rule using differentials by Leibniz. I am trying to correlate it to the definition...

Aug1810 08:41 AM
ross_tang

5 
1,083 
How to solve these integrals, such as sqrt(a^2 + x^2) & sqrt(2 + x^2)
Please be as descriptive and simple as...

Aug1810 08:32 AM
HallsofIvy

2 
885 
So I came across the statement:
Since x_n > \inf
then x_n_+_1 > \inf
This is very basic, But I'm already...

Aug1810 08:22 AM
Dickfore

4 
1,621 
Is it possible to take a derivative with respect to a function, rather than just a variable? I'll give a simple...

Aug1810 08:17 AM
HallsofIvy

8 
1,423 
Assume that I know the value of \iint_{S} \overrightarrow{F} \cdot \hat{n} dS over any surface in \mathbb{R}^3, where...

Aug1810 04:04 AM
Petr Mugver

3 
1,024 
How to differentiate y = 8 ln x  9 x with respect to x^2?

Aug1710 09:18 AM
quasar987

5 
1,086 
For my current research, I need to prove the following:
\int_0^1 \frac{dC(q(x) + k'(q'(x)  q(x)))}{dk'}\,dk' =...

Aug1710 09:05 AM
ross_tang

1 
1,079 
I understand how this works:
\cos x = \frac{1}{0!}  \frac{x^2}{2!} + \frac{x^4}{4!}  \frac{x^6}{6!} +...

Aug1710 08:36 AM
ross_tang

2 
2,105 
Hi there!
I am having a bit of a trouble when I try to work out a demonstration involving Dirac delta functions. I...

Aug1710 08:33 AM
juriguen

2 
1,218 
In my book, it says that the Binomial Series is
\sum_{n=0}^{\infty }\binom{n}{r} x^n
Where \binom{n}{r} =...

Aug1710 05:45 AM
ross_tang

6 
2,820 
My PreCal teacher gave us this problem today. I have worked on it for a very long time and have goten no where...

Aug1710 04:49 AM
martinbell

11 
3,631 
i have the following conjecture about infinite power series
let be a function f(x) analytic so it can be expanded...

Aug1610 11:25 PM
Eynstone

1 
906 
I want to express A as a function of B in the following equation:
curl{A}=B
So I need the inverse of the curl...

Aug1610 03:54 PM
Anthony

5 
2,911 
form zero to infinity of ((exp((ixs)*k))/k) dk

Aug1610 08:22 AM
qspeechc

1 
1,007 
Does anyone know of any examples of the explicit calculation of the Laurent series of a complex function? Any...

Aug1610 08:05 AM
zetafunction

5 
12,453 
http://i33.tinypic.com/i2vo1z.png
in that picture is a practice problem from a site I am using. I have highlighted...

Aug1510 11:44 PM
Xtensity

20 
2,545 
Is there a way to make sense of the following statement: "f is continuous at a point x_0 such that f(x_0) = \infty?"...

Aug1510 02:09 PM
Mute

1 
974 