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

Feb2313 09:24 AM
micromass

1 
46,234 
Hey folks,
I've been stuck on this for two days now so I'm hoping for some hints from anyone...
I'm trying to...

Aug2308 09:11 AM
mhill

1 
2,392 
I get the impression that unlike solving derivatives and integrals, sequences and series do not have a lot of...should...

Jul2608 10:48 AM
quasar987

1 
2,101 
Hey ppl....
Is x/x differentiable at x = 0
Now i know that it is not defined at x=0 but the function does...

Jul2808 07:00 AM
HallsofIvy

1 
1,171 
Is it mathematically possible for a series to be first declared "possibly not divergent" via the Test For Divergence,...

Jul2808 01:54 PM
sour_kremlin

1 
1,335 
See http://camoo.freeshell.org/cohomquest.pdf
thanks
Laura

Jul2908 02:39 PM
lark

1 
1,113 
Just a really quick sanity check. This equation...
\nablasU = \nablaU  n*(n \bullet \nablaU)
...the correct...

Aug108 06:19 PM
Hootenanny

1 
2,430 
im just curious. it has been bugging me about the beginning of the movie where the professor asks Ben a question and...

Aug808 12:50 AM
nicksauce

1 
2,020 
Just got some strange equation from relativistic travel problem :
{\it PA} \left( t \right) =\lim _{{\it...

Aug908 01:00 PM
rhz_prog

1 
1,377 
I am going to provide my answer to a complex integral and i was just seeking a few pointers as to weather i was on the...

Aug1008 05:12 PM
Count Iblis

1 
1,105 
My question is :
when z=f(x,y) is written down ...
it's assume that we're working in the cartesian plane with...

Aug1408 12:34 AM
Defennder

1 
1,154 
Hi.
In this solution(page 2) to Jackson 1.5 it is stated that
\nabla^2...

Aug1408 09:29 AM
Anthony

1 
1,260 
On my post titled double integrals you explained why limits go from x^2 to x when integrating wrt y (i.e. the "bottom"...

Aug1408 01:40 PM
NoMoreExams

1 
1,028 
I need help with the following integrals

Aug1808 07:52 AM
statdad

1 
991 
iv egot 1/2ln(1z)/(z+3)=Lnv+c
does this go to ln (1z)/(z+3)1/2=Lnv+c
which goes to...

Aug1908 11:34 AM
nicksauce

1 
1,014 
Hi everyone.
I'm a brazilian mathmatician that didn't studied complex analysis. I study finance and now I'm needing...

Aug2108 02:29 PM
Feanor

1 
2,121 
given z is complex, sketch the following locus on the Argand diagram:
{(z3+j)/(zj) }= square roots of 5
{ }=...

Aug2108 06:47 AM
HallsofIvy

1 
1,043 
cos pi= 1
using the 360 circle ir those quadrants
i forgot what it was, link

Aug2308 05:23 AM
HallsofIvy

1 
8,889 
I try to find the solution of the integrals below for more than a week.
\int_{p>0}^{\infty}\frac{\exp}{p}dp
can...

Aug2308 09:05 AM
CompuChip

1 
960 
http://en.wikipedia.org/wiki/Vector_potential
The Wikipedia article is mentioning an interesting formula for...

Aug2408 06:25 AM
jostpuur

1 
1,878 
f(x)=x/x^2+1
f'(x)= 1x^2/(x^2+1)^2
But then I can't seem to work through taking the 2nd derivative, perhaps I am...

Aug2508 09:33 AM
CompuChip

1 
1,228 
Both Int {(ttau)*sin(a*tau)}d(tau) and Int {(tau)*sin(a*(ttau)}d(tau) will give the same answer...

Aug2608 01:14 AM
Ben Niehoff

1 
1,061 
Can anyone PROOVE how to find out the normalisation of hermite polynomial?

Aug3108 10:54 AM
HallsofIvy

1 
2,654 
I have not understood what precisely is meant when someone says for example, x occurs implicitly or explicitly in a...

Sep308 10:16 AM
HallsofIvy

1 
2,774 
Can someone explain the additivity property of inner product spaces to me please

Sep208 08:12 AM
HallsofIvy

1 
1,151 
Thanks!

Sep208 08:04 AM
HallsofIvy

1 
1,128 
Hi
can anybody suggest my how to solve an integral equation of this type
integral(a,b)( c * f(T) dT) ==d
where...

Sep508 03:43 PM
mathman

1 
1,083 
I am working on a finite potential well problem and the math presented in a paper is simple algebra; but, the...

Sep608 06:03 PM
bluestar

1 
1,017 
How do I describe the image of a function like.
f(z) = (zi)/(z+i) given that the length of z is equal to one. The...

Sep808 10:10 AM
tinytim

1 
1,015 
Hi. I have the following two equations
S_{21}=\frac{(1\Gamma^2)z}{1z^2\Gamma^2}...

Sep808 09:33 AM
daudaudaudau

1 
1,091 
What's the inverse of f(x)= e^x/(1+2e^x)?

Sep908 02:05 AM
Marin

1 
25,850 
Show x<(or equal) xsin(1/x) <(or equal) x if x<0
and x <(or equal) xsin(1/x) <(or equal) x if x cant be 0

Sep908 09:14 PM
sutupidmath

1 
785 
let be the integral
\int_{R^{3}}d^{3}r F( \vec r . \vec r , \vec r . \vec a , r ,a) (1)
F depends only on...

Sep908 03:30 PM
mathman

1 
1,108 
can anyone give me a precise statement of the "closure of modules" theorem in several complex variables? it says...

Sep1008 06:02 PM
mathwonk

1 
1,003 
Hi I was hoping someone could explain how this works to me
I ran across this example in a book
D(p(a)) =...

Sep1008 09:06 PM
HallsofIvy

1 
1,186 
I'm not quite sure how this partial d/dx should look
(x + y) / sqr root(x^2 + y^2)
Is it (2)(1/2x)(x+y)/((x^2...

Sep1108 09:08 PM
Defennder

1 
1,645 
The graph of g is interm of f. So how to plot g(x)= f(x) and of g(x)=f(x). Is it jus a 'V' shape one.This problem...

Sep1208 01:49 PM
sutupidmath

1 
1,454 
Hi,
For a physics class, I am supposed to evaluate the following integral
I_n(a) = \int_{\infty}^\infty \mathrm...

Sep1408 03:21 PM
CompuChip

1 
1,538 
Question: Find the volume of the solid whose base is the triangular region of the xyplane with vertices...

Sep1608 08:30 AM
tinytim

1 
950 
Suppose that S is a nonempty set of real numbers that is not Sequentially compact. Prove that either (i) there is an...

Sep1608 06:18 PM
morphism

1 
1,446 
where can I read about distributions and the delta function. esp. to solve singular integrals.
I have seen that you...

Sep1708 06:43 AM
Anthony

1 
1,329 