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

Feb2313 09:24 AM
micromass

1 
40,088 
Hi everybody while trying to find the pdf of user in CDMA, I got stuck up with an integral, which is given below:
...

Jan1211 01:18 PM
tytyguy

1 
719 
My numerical analysis book doesn't explain it. It just tells you to use precomputed tables, and directs you to an out...

Dec2510 12:26 AM
lpetrich

1 
3,382 
Hi
I just got an introduction in complex analysis and some things are still not so clear. What troubles me the most...

Dec2710 04:13 PM
awkward

1 
780 
is the following formula of integration by parts
\int_{\infty}^{\infty}dxf(x)D^{n}g(x) = (1)^{n}...

Dec2710 03:58 PM
mathman

1 
642 
hi,
I am looking for any example (complete calculus) using Complex Numbers to solve real problems.
is the right...

Dec3110 04:08 PM
LCKurtz

1 
1,125 
Is it possible for a series to converge without the constraint that a_n+1< or equal to a_n? Can we have a convergent...

Jan211 04:15 PM
hgfalling

1 
557 
hello, i've posted this question on a math forum, but they weren't much help  this really is more appropriate in...

Jan511 12:52 PM
LCKurtz

1 
2,086 
I am trying to find the domain of this function f(x)=sqrt(x^2  2x +5). i am supposing that y=x^2  2x +5 and y must...

Jan611 07:05 AM
Tedjn

1 
3,867 
Hello,
I know the hyperreals are not connected with respect to the interval opens (open sets are open intervals) In...

Jan611 08:34 AM
jem05

1 
773 
Hello all,
My question is if f : X \mapsto Y is an isometry which preserves norm, i.e. \left\ f(x) \right\...

Jan611 06:57 PM
micromass

1 
820 
why in general can not give a meaningful expression for
\delta (x) \delta ^{m} (x) or H(x) \delta (x)
for...

Jan711 05:00 AM
CompuChip

1 
707 
In my derivation of one of Maxwell's Equations, I needed the fact that the Laplacian of 1/r vanishes everywhere except...

Jan1011 10:36 AM
HallsofIvy

1 
782 
Hi,
Is the final value theorem an appropriate way to deduce if a specific differential equations converges or...

Jan1311 03:06 AM
heatgrad

1 
546 
I know that the gamma function (from 0 to infinity):
\int et tx1 dt = \Gamma(x)
and that the relation exists......

Jan1111 01:01 PM
badtwistoffate

1 
1,790 
How does the function f(z) = z + 1/z take a circle of radius g.t. 1 to an ellipse? How do I think about it...

Jan1311 02:41 AM
torquil

1 
1,050 
how do i integrate 0.5et

Jan1311 12:22 AM
gb7nash

1 
691 
Hey guys,
I'm following a course on vector calculus and I'm having some trouble connecting things. Suppose we have a...

Jan1411 10:10 AM
HallsofIvy

1 
1,569 
Hi,
I'm working on a project (not homework) where I have to linearize a set of nonlinear equations of motion
...

Jan1811 10:57 AM
alexjbuck

1 
1,288 
This question comes from proof of Theorem 2.47 in Folland's "real analysis: modern techniques and their applications",...

Jan1911 12:30 PM
zzzhhh

1 
1,051 
Analysis math help please!?
1. Let E be a nonempty subset of R (real numbers)
Prove that infE <= supE
2. Prove...

Jan2311 05:49 AM
JThompson

1 
801 
Hi,
I am not sure if this is the right forum to post this. I am working on a Kalman Filter for battery state of...

Jan2111 03:32 AM
tommyhakinen

1 
1,813 
my question is the following
let be the Fourier transform \int_{\infty}^{\infty}d^{4}p \frac{exp(...

Jan2011 04:52 PM
mathman

1 
1,284 
Hi,
I'm having a problem in evaluating a triple integral for a deformable control volume equation:...

Jan2411 11:06 AM
arildno

1 
1,341 
I am not very familiar with terms from numerical analysis, thus I do understand the definition for convergence rate...

Jan2411 05:06 PM
mathman

1 
1,212 
Question: Why does my calculator state the limit of the following function is 1, but my calculations state it does...

Jan2611 10:26 PM
LCKurtz

1 
667 
Hi guys,
I want to approximate sinh(3391014490) using taylor's series as i don't know of a way to compute this in...

Jan2711 02:46 PM
AlephZero

1 
1,606 
How can I represent a general "expression" as a Fourier series?
For example, I want to find the Fourier series of...

Jan2911 07:16 PM
AlephZero

1 
948 
I made a post titled the same thing but it didnt seem to show up for some reason so if i am just reposting this over...

Jan3011 07:20 PM
HallsofIvy

1 
1,041 
How can we find a parametrization for SU(3) in terms of angles?

Feb311 01:58 PM
fzero

1 
1,342 
http://img546.imageshack.us/img546/5885/imagepp.png
Thank you for any help.

Feb111 12:31 PM
Mark44

1 
538 
hello, i am stuck on how to do this
I know how to do it for an indefinite integral, but it gets confusing for a...

Feb311 01:18 AM
Mark44

1 
2,184 
We often have
lim_{x\rightarrow a}f(g(x)) = f(lim_{x\rightarrow a} g(x))
if f(x) is continuous at g(a).
...

Feb411 04:19 AM
DeltaČ

1 
1,559 
Hi, I am having a little trouble understanding something my lecturer said about using the table of signs to check...

Feb511 07:24 AM
tinytim

1 
2,252 
hey
I do not understand a step here!
The integral is:
\delta S(x,t)=mc \int_a^b u_i d \delta x^i =0
and...

Feb511 08:07 PM
fzero

1 
918 
So my calculus isn't as sharp as I'd like it, and I am having trouble solving this diff eq, and I know the correct...

Feb611 07:02 AM
arildno

1 
549 
i need to know is there a difference between the method of finding the asymptote of a function and the finite...

Feb711 08:31 AM
HallsofIvy

1 
1,335 
Hi,
if we consider a constant function f(x)=1, it is wellknown that its Fourier transform is the delta function, in...

Feb711 04:27 PM
mathman

1 
951 
I'm teaching Calculus and am looking for an example of a first order differential equation application that is...

Feb711 11:00 PM
chiro

1 
2,170 
I'm supposed to find the equation of a line perpendicular to and intersecting another line. The original line was...

Feb911 06:31 AM
tinytim

1 
930 
I have a function with one and only one local/global maxium.... (i.e. half the function has positive slope, half the...

Feb1211 10:16 AM
HallsofIvy

1 
1,183 