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

Feb2313 09:24 AM
micromass

1 
40,079 
If i have a signal S(t) (the plot would be voltage vs time) and I take its fourier transform, what are the units of...

Mar2908 12:55 PM
DaleSpam

4 
14,102 
I've attached my work, but basically, I'm trying to compute this:
\int_{0}^{\infty}2\sin({x^2})dx.
(The 2 is only...

Mar2908 07:18 PM
K.J.Healey

12 
20,801 
there is no antiderivative of e^{x^{2}} . So, im puzzled how to evaluate the following integration. help me
\int...

Mar3008 12:12 PM
tinytim

10 
2,461 
Im trying to find the derivative of f(x) = x+2 / x2
I know the formula to apply to this but it get quite messy...

Mar3108 05:17 AM
meaw

11 
1,185 
http://math.berkeley.edu/~theojf/Midterm2Practice.pdf
can someone please help me on problem number 2 of the link...

Mar3108 06:53 AM
HallsofIvy

1 
1,494 
I have taught myself derivatives and I have taught myself the power rule and substitution but the book that I have bin...

Mar3108 07:53 AM
thharrimw

4 
882 
Hi there, hopefully someone can help me I'm completely lost!!
I'm trying to solve sin((pi*x)/6) >= (x/2) for o<=...

Mar3108 12:20 PM
maryk

9 
1,752 
How the heck do I do this problem?

Evaluate integral:
\int\inte^(x/y) dA
Where dA=dxdy or dA=dydx

Mar3108 02:15 PM
Hootenanny

1 
720 
1. (a) If｛an｝ is a covergent sequence and limit of an ^2=0, prove that limit of an=0.
(b) If limit of an...

Mar3108 02:39 PM
mrandersdk

1 
1,254 
Hi, I have a question on complex stoneweierstrass theorem.
the span of {exp(2Pi*inx) :n is integer} is uniformly...

Mar3108 03:56 PM
amd939

0 
2,202 
Let
f:]a,b
be a continuously differentiable function, where ]a,b is some interval, and define
...

Mar3108 06:30 PM
jostpuur

0 
688 
Hi,
I came across an integral equation of the Form
x(t)=\int_\mathbb{R_+}{ds\, x(s)K(s,t)}
wher K is some...

Mar3108 07:29 PM
Pere Callahan

5 
2,174 
i wondered at the idea that calculus works for continuous functions and in reality fundamental quantities are...

Apr108 03:29 AM
Gib Z

6 
871 
Problem:
Let X be a locally compact Hausdorff space, Y a subspace. Show that the quotient space X/Y is a Hausdorff...

Apr108 08:33 AM
mathwonk

2 
1,585 
Hey guys, I'm in a little bit of a jam here:
I managed to miss a really important lecture on continuity the other...

Apr108 02:16 PM
Diffy

3 
1,142 
Hey guys, could one of you explain why when doing a volume integral using spherical polar coordinates, you have the...

Apr108 06:16 PM
tinytim

8 
1,837 
Any help on this problem would be appreciated
a) Show that (f^1 S)compliment is equal to f^1(S compliment) for...

Apr108 08:19 PM
Pere Callahan

2 
1,661 
For those who don't know I'm writing a tutorial (Introduction / Summary of Differentiation) in the tutorials forum. I...

Apr208 08:21 AM
Hootenanny

3 
4,518 
Ok, this might be a dumb question but can anyone tell me what kind of math calculus is? I asked my current teacher...

Apr208 11:17 AM
grmnsplx

4 
856 
Hi there,
I have problems in finding the correct results for these integrals. I have to say I m not a great expert...

Apr208 01:20 PM
nullus 1er

0 
829 
i am in 11 grade and i have taught myself calculus so the calc teacher at my school sighned me up for the AB calc...

Apr208 01:33 PM
transgalactic

2 
3,062 
Use binomial series to approximate sqrt (35) with an accuracy of 10^(7)
(35) = sqrt(35*36/36) = 6*sqrt(35/36)...

Apr208 04:03 PM
mathman

1 
757 
How does one know when the a polar curve repeats itself?
I usually go from 0 to 2pi but that sometimes get me into...

Apr208 07:13 PM
motornoob101

2 
2,046 
Polar curves absolutely drives me nuts. I can do the integration to find the area of it no problem. The problem is.. I...

Apr208 11:01 PM
bob1182006

2 
3,266 
Prove by definition the statement
lim x>4 √x = 2
This is what I've done:
Given ε>0
(√x)2 = √x2< ε ...

Apr308 06:54 AM
HallsofIvy

7 
1,390 
I'm trying to show a function has nonuniform continuity, and I can't seem to think of 2 sequences (xn) and (yn) where...

Apr308 11:01 AM
sutupidmath

3 
902 
I think you can use integration by parts to do the integral below.
But, it's going to take a lot time to do it that...

Apr408 04:05 AM
Gib Z

4 
1,805 
Hi,
Someone has some suggestion about selfstudy book about "Laplacian" and "Hamilton Operator".
Thanks

Apr408 10:27 AM
haohan

2 
1,309 
I'm working on a 3d physics simulator, and I'm trying to build a nice, easytouse camera into it. Currently, the...

Apr408 04:57 PM
_Nate_

0 
933 
Hi all. I am stuck on this problem:
Prove that \sum^{\infty}_{n=1}\frac{n}{(n+1)(n+2)(n+3)}=1/4.
I am totally...

Apr508 08:10 PM
gamesguru

9 
1,461 
Can somebody solve this problem: the limit of ^(1/x) when x approaches 0 ?

Apr608 05:45 AM
arildno

2 
805 
Suppose f is continuous function on such that for each continuous function g, \int(fg)dj = 0 (Note: integral is from...

Apr608 04:04 PM
Misswfish

2 
802 
If f is continuous on , f(x) \geq 0 for each x in and there is a number p in such that f(p) > 0, then \int f dj > 0...

Apr608 05:22 PM
Misswfish

6 
912 
for g(x) = (x2) / (x^2 9)
the domain of the function would be simply to have the denominator not equal to 0,...

Apr608 11:03 PM
alpha01

2 
1,127 
figured it out

Apr708 12:43 AM
tronter

0 
974 
id like some help deriving certain functions using the chain rule
the way our teacher does it is different from what...

Apr708 02:31 AM
70f

4 
1,379 
I read somewhere that e^\pi  \pi = 20.
1. Is it true?
2. I tried finding out.. but all i've reached till is:
...

Apr708 09:23 AM
rohanprabhu

3 
947 
How do you do the convolution of
exp (x(n))*u(x(n)) and exp(x(n1))*u(x(n1))
where u(x) is the unit step...

Apr708 01:03 PM
purplebird

0 
1,070 
Hey all, i'm hoping someone can help me understand this example in my book. I'm pretty bad at analysis, so explaining...

Apr708 03:41 PM
jimmypoopins

8 
2,819 
So we learned about the basic tests for convergence of an infinite series, and we learned about alternating series,...

Apr708 05:01 PM
Feldoh

11 
2,224 