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

Feb2313 09:24 AM
micromass

1 
43,794 
Hello,
I have two questions to ask regarding uniform convergence for sequences of functions.
So I know that if a...

Jan3106 03:44 AM
benorin

4 
2,785 
Hello everybody.
I haven't found anywhere the rigurous relation between the Continuos Fourier Transform (CFT) of a...

Jan3106 01:59 AM
Fernsanz

0 
3,092 
In the Fundamental Theorem of Calculus, it is stated that
lim max deltax_k > 0 sigma f(x_k*)*deltax_k = L,
...

Jan2806 04:05 AM
Galileo

7 
2,589 
e^{x^2}\cos \left( e^{x^2} \right)
Mathematica doesn't have an algorithm for it, does a closed form exist for the...

Jan2706 03:19 AM
cogitoČ

1 
1,434 
Hi,
Find the result of this integration::
\int_0^\infty \frac { e^ {3x}  e^ {4x} }{x} dx
The members who know...

Jan2506 11:12 AM
shmoe

8 
1,315 
In physics, we often use the assumption that if the integral:
\int_D f(\vec x) d \vec x =0
and this holds for...

Jan2406 01:20 PM
StatusX

1 
2,096 
Can anyone help me integrating the folowwing integrand from zero to infinity:
x*ln^2(ax)*exp(bx^2+cx)
where a,b and...

Jan2406 08:10 AM
ari_a

3 
1,440 
Question that I came across and that has stumped me for about a week hehe.
Let p(z)=z^n +i z^{n1}  10
if...

Jan2406 03:30 AM
Muzza

1 
7,131 
If I had a sinusoid, how would I find the average value of it over a given interval. Say pi/5 to pi/5 for instance....

Jan2306 06:18 PM
mathman

3 
15,534 
Is this identity true?
Identity:
\frac{d}{dx} x^n = \lim_{h \rightarrow 0} \frac{(x + h)^n  x^n}{h} = nx^{n1}

Jan2306 12:54 PM
benorin

51 
5,147 
I hope the following webpage on new roots solving algorithms based on the Arithmonic mean (a particularcase of the...

Jan2306 10:18 AM
arithmetic

0 
1,210 
I did some number crunching and found the following:
Given n equations in n unknowns:
a*f(x) + b*g(y) = c...

Jan1906 04:49 PM
Edwin

9 
5,950 
i need help in proving this essential ineuality which i don't know how to prove (quite trivial isn't it):...

Jan1806 10:37 PM
leon1127

11 
1,467 
Happy new year for you all,
This is very nice place, So girls and boys, let me give you something to play with:...

Jan1706 07:07 PM
enigma

37 
4,174 
f_n(x)= x^n/1 + x^n
does this series converge on the interval
Say if x = 1 then the series is < some epslon ,...

Jan1706 01:16 PM
maverick6664

4 
1,301 
Hi,
I ran into a situation I haven't experienced before where the integral of the derivative doesn't get me the...

Jan1606 12:33 PM
dc20

6 
1,213 
I have made some observations regarding the Precise Limit Definition.
For any given polynomial:
ax^n
The...

Jan1506 11:03 PM
benorin

10 
2,238 
This problem is baffling myself and several of my friends in the infamous Physics 152 class... so I give it to you...

Jan1506 11:09 AM
matt grime

5 
1,587 
How do you find the limit to:
Lim
x>0+ sqrtx/(1cosx)
I use the L'Hopital rule and i get
lim
x>0+ ...

Jan1406 03:35 PM
mathwonk

12 
1,695 
Hello...I need help and I know this is a very simple problem...I don't know why I'm getting stuck( Maybe because it's...

Jan1406 12:45 PM
matt grime

1 
1,032 
(A, B) is an interval in the real line. If I take the middle point (BA)/2, and then take the middle point of each of...

Jan1306 09:30 AM
Castilla

7 
1,435 
I would like to determine necessary and sufficient conditions for equality to hold in Minkowski's Inequality in...

Jan1206 09:17 AM
fourier jr

2 
7,903 
I am thinking about purchasing some math software so I can get a better understanding of the math I am learning. I...

Jan1106 09:52 AM
shmoe

19 
3,151 
Given a realvalued function f:X \mapsto \mathbb{R} where X is a subset of \mathbb{R}^n. Consider a closed extended...

Jan1106 01:12 AM
kaosAD

0 
1,048 
Find a & b for the following transformation
1/(z+a) = (a/z) +
I am kind of lost as to where to start on this...

Jan1006 11:16 PM
Tide

1 
1,909 
I'm doing a review in calc I to prepare for calc II. I'm now applications of derivatives (optimization). Okay so when...

Jan1006 04:24 AM
Demian^^

4 
1,750 
My calculus book describes the following example:
Equation:
\lim_{x \rightarrow 0} \sin \frac{\pi}{x} = \text{does...

Jan906 06:13 PM
Data

15 
2,218 
It should be relatively easy, but I can't seem to figure out how to begin.. if anyone could help me out, I would be...

Jan806 04:00 PM
Demian^^

0 
928 
Hi. I have this exam in vector calculus tomorrow, but i'm having trouble sorting the following formula out. Could...

Jan806 02:55 PM
Tide

3 
1,869 
Hi,
Let C_1 and C_2 be nonempty convex sets and suppose C_1 \cap C_2 \neq \emptyset . I read a text that claims...

Jan606 10:19 AM
matt grime

10 
2,251 
My Calculus professor has indicated a 'shortcut' in determining polynomial fraction limits, I am inquiring if this...

Jan606 08:57 AM
VietDao29

2 
12,616 
let,s suppose we have a function f so the limit when \epsilon\rightarrow{0} is infinite..now i would like to know how...

Jan506 04:21 PM
Edwin

2 
1,280 
I'm not sure if this is calculus, but it is like a review in my calculus class.
Suppose that in any given year, the...

Jan206 04:41 PM
Jacobpm64

9 
2,610 
Facts:
1. We have the decrecient sequence {a_n} which converges to "a".
2. Let "K" be a constant.
3. We have the...

Dec3105 10:41 AM
Castilla

4 
1,882 
I found this in the web:
We say that f is lower semicontinuous at x_0 if for every \epsilon > 0 there exists a...

Dec2905 02:39 PM
benorin

10 
2,157 
If f is a continuous decreasing nonnegative function on a_n = \sum_{k=1}^nf(k)  \int_1^nf(t)dt.
I need to show...

Dec2905 01:15 PM
sparkster

3 
2,606 
let be the divergent series:
1^p+2^p+3^p+.....................+N^p=S(N) with p>0 my
question is..how i would...

Dec2805 02:17 PM
shmoe

2 
1,524 
Hi, I want to do an experiment using two dissimilar ropes in my basement and see if I can produce some results using a...

Dec2805 10:50 AM
Cyrus

7 
2,072 
Working from "Principles of Mathematical Analysis", by Walter Rudin I have gleaned the following definition of...

Dec2705 02:47 PM
mathwonk

6 
1,559 
i would like to know how to prove this equality:
\frac{1+2^p+3^p+.....+n^p}{\int_0^{n}dxx^p}\rightarrow{1}
for...

Dec2705 02:39 PM
mathwonk

3 
1,477 