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

Feb2313 09:24 AM
micromass

1 
43,837 
Let a,b,x,y\in\mathbb{R} and f\left(a,b\right)=...

Oct510 04:28 PM
dagrgGS

0 
629 
If anyone can help i seem to have reached a breakdown somewhere down the line or am simply lacking in some knowledge...

Sep612 09:49 PM
DahnBoson

4 
1,005 
Are inflection points critical points?
and what about at the value that f(x) undefined? Is that critical point too?

Nov412 03:25 PM
Bipolarity

2 
587 
We know that d(cos^1 (x/a))/dx = 1/sqrt(a^2  x^2) (assuming a and x are positive)
So...Why the integral of...

Dec1712 01:16 PM
sahil_time

6 
1,074 
i know if every simple closed curve in D can be contracted to a point it is simply connected as in the case ofR^2...

Mar710 10:21 PM
Tinyboss

1 
438 
Is the following proof that the rationals are dense in the reals valid?
Theorem: \forall x,y\in\mathbb{R}:x<y,...

Jun1911 03:50 AM
dalcde

7 
2,482 
Is it true that finite sets don't have limit points?

Jun2111 02:10 AM
dalcde

6 
777 
How did Newton's original formulation of Calculus look like? I've heard that it was more intuitive and fun than the...

Jul911 10:16 AM
somed00d

6 
1,767 
Is there an elegant and simple proof of the Chain Rule? Every proof I've found is complex and mindboggling

Aug1011 12:56 AM
I like Serena

25 
3,840 
In Wikipedia, it is said that
\mathrm dy=\frac{\mathrm dy}{\mathrm dx}\mathrm dx.
Can we divide both sides by...

Aug2611 06:48 AM
dalcde

11 
1,108 
Hi all, I need answers and EXPLANATION to the following problems: (Please Help!)
(i) f : N > N defined by f(x) =...

Sep1909 02:59 AM
Hurkyl

1 
636 
Hey all,
can you check out this site
http://www.mathisfunforum.com/viewtopic.php?pid=49738
In the very first...

Jan2909 03:10 PM
tinytim

1 
985 
Hi all,
I'm doing some reading on hyperspheres.
I am curious why the volume of n1 hypersphere (a line segment)...

Feb409 02:02 PM
Damascus Road

0 
981 
Hi!
Sorry if this is a bit trivial, I was wondering if there is a way of converting a series
...

Jan910 03:14 PM
rochfor1

1 
2,749 
Is it true that
\int_0^1 f(x) dx \in \mathbb{Q} \Rightarrow \int_0^1 x f(x) dx \in \mathbb{Q}
?
(Suppose ...

Sep111 01:04 PM
Damidami

4 
1,039 
I think I'm not understanding something here:
A point L \in \mathbb{R} is a limit point of a sequence a_n if exists...

Sep1411 01:06 PM
alexfloo

5 
2,441 
I have read somewhere that we can extend the notion of a series of a sequence
\sum_{i=1}^{\infty} a_n
to sums over...

Nov1311 10:35 AM
micromass

3 
1,466 
I was reading this article of wikipedia:
Conditional and absolute convergence
It says:
"An absolutely...

Nov2511 04:54 PM
Damidami

4 
1,533 
I read that an alternating series \Sigma (1)^n a_n converges if "and only if" the sequence a_n is both monotonous...

Nov3011 01:06 PM
Damidami

2 
881 
I'm studing the RiemannStieltjes integral \int_a^b f dg on closed intervals of the real line, and the natural...

Dec911 03:31 PM
mathman

1 
1,206 
I know that this function f : \to \mathbb{R}
f(x) = \begin{cases} 1 & \textrm{ if } x \geq 0 \\ 0 & \textrm{ if }...

Dec911 10:26 AM
Stephen Tashi

1 
851 
Let f(x,y) = ( \frac{y}{x^2 + y^2}, \frac{x}{x^2 + y^2}) with f : D \subset \mathbb{R}^2 \to \mathbb{R}^2
I...

Dec2411 07:13 AM
Damidami

3 
1,211 
Hi,
I'm trying to fix in my head a very precise definition of what to mean for an euclidean space, as we use it in...

Dec3011 06:04 PM
D H

23 
2,387 
I am teaching a student in a course without partial differentiation so
I can only think of the following method
let...

Sep2906 06:59 PM
Damned charming :)

0 
2,326 
If t is constant then
both cos(t +x) + i sin(t+x)
and * both satisfy the differential equation
dy/dx = i y
and...

Oct2206 11:28 PM
Damned charming :)

0 
1,244 
Hi All,
This is not a homework question, I am just trying to be come quicker at integrating by parts, when...

Mar411 06:12 PM
jhooper3581

4 
1,234 
I am reading through a worked example of the Taylor series expansion of Sinh(z) about z=j*Pi
The example states: ...

Nov2011 05:38 AM
HallsofIvy

3 
1,846 
Hi!!
I'm having a little problem with an exercise and I dunno how to sort it out.
Basically what I have is a...

Aug3011 08:46 AM
Hootenanny

1 
952 
Hello users,
I would like to know when do you use pattern recognition over integrals
Someone told me it was that...

Jul313 01:03 PM
Ackbeet

3 
543 
Hello users!,,
What do you think about taking calculus 2 on summer???
Any of you have taken that course in summer?...

May2913 07:04 PM
Lebombo

3 
863 
Hello users!,,
What do you think about taking calculus 2 on summer???
Im studying/teaching myself , and I want to...

May3113 07:10 PM
Mark44

1 
669 
Do you need to know how to graph in order to establish which limit of an improper integrals is going to infinity??...

Jun1413 10:52 PM
hsetennis

1 
662 
Hello users!
Im taking calculus 2 for summer(staring in 3 weeks), and it's the first time I take the course.
Im...

Jun2913 08:32 AM
jackmell

4 
968 
S is a portion of a curve with r(u,v)
where 0 < u < 2 and 0 < v < 2pi
I'm meant to calculate Flux of the vector...

Apr2613 09:19 AM
Bipolarity

2 
648 
Evaluate
∫∫R 5x2 + 2y2
where R is triangle (1,1) (2,0) (2,2)
I see the lines bounding the triangle are y=x ...

Jan312 03:23 PM
Poopsilon

5 
1,622 
Alright guys Im looking for some help with this problem regarding calculating total electric charge in a layer of...

Sep1108 10:52 AM
Dan7620

4 
1,830 
Hi. I was just wondering, how can i prove the following identity:
\frac{{dy}}{{dx}}\frac{{dx}}{{dy}} = 1
Its...

Jul1507 08:14 AM
danago

2 
5,328 
Hi. For an integral like this, for example:
\int {\sqrt {1  \cos ^2 x} dx}
The most obvious way of solving...

Jul2007 04:17 AM
VietDao29

3 
11,198 
Hi Guys,
I am revising for an exam i have this week, the last module on my subject was calculus. I did not...

Jul1914 11:01 PM
TitoSmooth

7 
597 
if we know the value of the divergence of a grident field at each point, div ( grad f ) = g, how can we compute the...

Apr1709 04:41 PM
dancingpig

0 
1,224 