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

Feb2313 09:24 AM
micromass

1 
39,994 
Hello everyone,
This is probably a really newbie question and I apologise for it.
So a continuous function is...

Jan1912 02:01 AM
chiro

4 
1,033 
hi,
there is a challenging problem that no one could answer it,so here it is if any one wants to try:
if x,z,y are...

Nov2107 03:02 PM
therector24

7 
1,404 
Hello, everybody!
I'm a Maths/Physics student at Ecuador. Sorry if my English sucks, i'll try to do my best... Some...

Oct2505 10:57 AM
SebastianG

3 
1,268 
greetings . the following integral appears in some references on analytic number theory . i am really intrigued by it...

Mar112 01:54 PM
riemannian

1 
951 
how could or should we consider the function
f(s)=0^{s} for values of 's' ??
if Re (s) is smaller than 0 then...

Feb2510 07:54 AM
zetafunction

0 
579 
Let \vec{A} be a vector with length \vec{ A}
\hat{A} \;=\; \frac{\vec{A}}{\vec{ A}}
1) What is ...

Sep2010 10:47 AM
TacTics

8 
1,294 
Hi and sorry if I misplaced the thread.
I'm having quite some trouble with analyzing the convergence of the following...

Jan2911 10:32 AM
Gib Z

2 
1,548 
The answer doesn't seem obvious to me:
If I set up
B_0 = 1 and B_n = n^2
Then let
A_n = \sum_{m=0}^n B_m...

Apr1110 07:55 AM
rsq_a

2 
791 
Dos this fractional Taylor series
(a+x)^{r} = \sum_{m=\infty}^{\infty} \frac{ \Gamma (r+1)}{\Gamma (m+\alpha+1)...

May510 07:39 AM
g_edgar

1 
658 
Folks,
Could anyone give me a working example of a sequence of functions that converges to a function wrt to the...

Dec2111 02:33 PM
bugatti79

7 
1,617 
There is theorem that is widely used in physicse.g., electricity and magnetism for which I have no proof, yet we use...

Jun812 05:48 PM
Quantumjump

4 
1,962 
What is the definition of a zero set and what exactly does it mean?
I have come across different responses on the...

Apr1011 06:23 PM
gb7nash

4 
1,037 
Hi,
I am new to calculus, and in some books I read
a= dv/dt
=>adt=dv.
If dt means with respect to t, how is it...

Jun2510 02:23 AM
Calculus 142

3 
973 
I need help with these problems:
(1) STan^1(y)dy
and
(2) Ssin^1(x)dx
(S=integral)

May2304 11:35 PM
franznietzsche

9 
916 
The other day I stumbled across a certain integral that had a threeletterabbreviation that I believe began with A. I...

Apr611 01:57 PM
HeisenBerg46

0 
1,107 
Let be the sum formula due to Abel and Plana:
\sum_{n=0}^{\infty}f(n)\int_{0}^{\infty}f(x)dx=...

Jun2706 03:12 PM
eljose

0 
2,594 
Abel’s Lemma,
Let a_0,a_1,a_2,\cdots and b_0,b_1,b_2,\cdots be elements of a field;
let s_k = a_0 + a_1 + a_2 +...

Oct1304 07:59 AM
Integral

2 
3,485 
Does anyone have a site where I could get some practice problems that require one of these tests to prove a series...

Nov3008 06:59 PM
joeblow

0 
2,274 
e=(1/n+1)^n,as n>00,
though I have used this symbol for so many times, but I still can not understand the true...

Dec1107 05:58 AM
HallsofIvy

12 
1,836 
First, I wonder whether I can put the post here...
Given
X=^2
a(x)={y in X:yx>=1/4}
b(x)is the convex...

Oct2407 05:20 PM
EnumaElish

1 
1,481 
hallow everyone
i am a tenthgrade student in Taiwan.What i want to know is that how to proove the curvature at point...

May2607 08:52 AM
typhoonss821

0 
939 
I have a cauchy sequence (f_n) in the space of functions on which are infinitely differentiable, C^oo () =...

May807 02:50 AM
e12514

2 
797 
The definition of 'Bounded above' states that:
If E⊂S and S is an ordered set, there exists a β∈S such that x≤β for...

Mar1612 04:11 PM
mathman

3 
1,247 
what is the simplification of the following expression (in terms of gamma and\or other functions) ?
\Gamma(xy)
i...

May2808 12:17 PM
benorin

7 
1,870 
I am reading a book about integration on all possible momentum in 3D space, and it change the integration to a 1D...

Feb109 05:48 PM
adriank

1 
8,975 
I have two questions:
1. Least Upper Bound
ex)
Let A = {x : x∈Q(rational number) , x^2＜2, x＜0} ⊂ S (ordered...

Mar1312 08:21 AM
jwqwerty

0 
662 
Hi, i have a question about numerical evaluation of following 4D multiple integrals
...

Jul2509 01:58 AM
ppg

0 
949 
How is it different (or how upgraded) is it from normal diffrentiation?

Feb205 10:20 PM
mathwonk

7 
2,226 
In the mathematical text I've read, it says that \frac{e^{ikz}}{z^{2}+m^{2}} has only one simple pole, that is, im, if...

Oct209 09:26 PM
OsCiLL8

2 
786 
with the series representation of sin or cos as a starting point (you don't know nothing else about those functions),...

Jun2410 09:10 PM
awkward

6 
1,270 
hey all
can anyone explain why, for small \alpha we may allow \tan \alpha = \alpha at an intuitive, geometrical...

Oct1313 09:17 PM
Simon Bridge

3 
449 
What I know from the chain rule is that if y and u are differentiable with respect to x then dy/dx = (dy/du)*(du/dx)
...

Feb1912 04:47 PM
alexfloo

5 
998 
Hello!
I'm studying on my own the complex error function w(z), also known as Faddeyeva function. On page 297 from...

Jul808 12:12 AM
luisgml_2000

0 
3,198 
I've encountered two definitions of measurable functions.
First, the abstract one: function f: (X, \mathcal{F}) \to...

Dec1010 07:53 PM
dimitri151

4 
1,252 
Hello!
I am having problems with the inverse function theorem.
In some books it says to be locally inversible:...

Nov2208 01:12 PM
HallsofIvy

5 
3,445 
If f from R to R is continuous, does it then follow that the preimage of the closed unit interval is compact?
At...

Oct2307 09:39 PM
mathwonk

14 
3,744 
hello
(pardon me if this is a lame question, but i got to still ask)
If a function is uniformly continuous (on a...

Apr1113 09:02 AM
lavinia

22 
1,510 
i know that the sine integral converges to pi/2. But what about the abs value of the sine integral. It seems to me...

Apr905 12:56 PM
shmoe

4 
6,824 
I'm currently relearning on my precalculus and calculus and have been reading Sylvanus P Thompson's _Calculus Made...

Dec510 09:56 AM
ShinyRedCar

5 
1,983 
My defintion of an absolutely convergent series is one in which you can rearrange the series and it converges to the...

Nov1606 08:55 PM
Oxymoron

15 
4,504 