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

Feb2313 09:24 AM
micromass

1 
46,550 
From this diagram, http://www34.homepage.villanova.edu/robert.jantzen/courses/mat2500/handouts/s14638.pdf how can i...

Oct508 10:13 PM
Prologue

1 
5,960 
Hi guys. I little while ago I remember reading on some article on the internet something we there was a comment about...

Oct708 09:24 AM
HallsofIvy

1 
1,276 
What is a strategy to integrate arctan (sqrt(x))?
What about arcsin (sqrt(x))?

Oct808 02:31 AM
sutupidmath

1 
876 
I'd like to find the integral of this in terms of re(f(x)) and im(f(x)). Please show some steps, this is not homework....

Oct808 11:40 PM
sutupidmath

1 
984 
Hey, in my text book they keep doing this and I can't follow
for example r.\ddot{}r = 1/2 \ddot{}r^{}^2{}
and...

Oct808 02:08 PM
AKG

1 
1,191 
Hallo Everybody !
I have tried to look in the previous posts, but I haven’t find something useful.
I am looking...

Oct808 11:58 PM
TacTics

1 
2,527 
I'm just curious of what exactly multiple integrals are for example if you have
\int^{3}_{1}xdx
you get 31 but...

Oct908 11:26 AM
waht

1 
1,200 
When showing that an integral is convergent, where is the best place to start?

Oct908 06:01 PM
mathman

1 
1,292 
Dear People,
I'm sorry that im putting this question here because it might be very obvious and it might insult some...

Oct1408 08:40 PM
statdad

1 
618 
Hi
I may be missing something obvious here, but I am reading a paper on random sampling, and in one of the proofs,...

Oct1208 09:43 AM
nicksauce

1 
1,295 
If second derivatives of function,f, fxy and fyx, are equal,
are the first dervitives, fx and fy, continuous?

Oct1308 02:42 AM
Hootenanny

1 
2,313 
Hi all, I have a general question.
When calculating the area of a triangle in 3 space, one applies the formula
...

Oct1708 07:40 PM
HallsofIvy

1 
7,718 
This may be a stupid question, but I just confused myself on compactness. For some reason I can't convince myself that...

Oct2208 03:24 AM
HallsofIvy

1 
4,238 
For 1 < p < oo it is true that:
If we have a sequence ( x_n )_(n >= 1) in l^p that converges weakly to zero then that...

Oct2508 09:35 PM
morphism

1 
1,077 
The JGM3 model of earth's gravity is expressed in the form of coefficients C and S to Legendre polynomials in r, theta...

Oct2808 12:16 PM
ronslow

1 
1,242 
Show that lim sup (an+bn)<=limsupan +limsupbn
where (bn) and (an) are bounded...
How would you go from for n < N...

Oct2808 11:07 PM
PhysicsHelp12

1 
1,668 
to be integratable but still give a wrong answer even if all the steps are performed correctly? Assume that an...

Oct2808 12:07 PM
HallsofIvy

1 
978 
In vector calculus, with a space curve C, there are the 3 vectors, tangent, normal, and binormal.
Are they always...

Nov308 03:27 PM
mathman

1 
3,109 
I'm looking over a proof and I'm wondering from which principles does it follow that
\mid a  b \mid < 1 \to \mid a...

Nov508 01:56 PM
duke_nemmerle

1 
1,542 
I am stuck on both these questions, I have no idea where to begin I was given a worksheet which our instructor will...

Nov608 12:54 PM
TacTics

1 
1,727 
I converted the function, {t^n}{e^{t}} where t is the variable (time domain) and n is any real whole integer greater...

Nov908 09:00 PM
flouran

1 
3,036 
find the points of discontinuouty
limit as x,y > (0,0) of function f(x,y) = 1((cos(x^2+y^2)/(x^2+y^2))

Nov1208 03:42 AM
Pere Callahan

1 
2,408 
I was just curious as to why out of all properties of metric spaces (ie compactness, closure, etc), i dont know how...

Nov1508 01:57 PM
morphism

1 
1,001 
thanks I think I got it :)

Nov1608 05:01 AM
HallsofIvy

1 
1,256 
Hi
Could you please tell me how to integrate it? Thanks ~~
\int_{\infty}^{\infty} \frac {e^{i\omega t}}...

Nov1808 01:46 PM
maze

1 
2,203 
I am having trouble remembering the correct approach here. This is in regards to deriving a governing equation for...

Nov1908 06:08 AM
tinytim

1 
1,551 
I know its a really dumb question and if i reached this far in math i should know but..how do you draw the diagrams...

Nov2008 05:51 AM
HallsofIvy

1 
1,355 
Show that if E is a Borel measurable subset of R, then {(x,y) xy is in E} is also measurable in the product space of...

Nov2108 09:24 AM
Pere Callahan

1 
1,488 
this is the question,
Prove that if f is continuous on (a,b] and if f is bounded on then f is integrable on . ...

Nov2308 05:23 PM
lurflurf

1 
3,090 
Howdy Ho, partner.
I have a series of functions {f_{n}} with f_{n}(x) := x^{n} / (1 + x^{n}) and I am investigating...

Nov2308 08:46 PM
morphism

1 
1,564 
Does anybody know substitutions that can be used for the following integrals:
\int (a^2  b^2 \cos\theta)^{3/2}...

Nov2408 06:21 PM
Peeter

1 
1,098 
I've been reading Gunning and Rossi's book on complex analysis in several variables (good book!).
They define...

Nov2708 06:12 AM
lark

1 
1,012 
Hi. I am having trouble getting started on this problem.
I need to find the Laurent series for: f(z) = exp in...

Dec208 08:32 PM
mutton

1 
1,441 
hi there!
I´m doing vector analysis the last two weeks and I feel unsure about this identity. Can anyone of you say...

Dec108 01:28 PM
Marin

1 
976 
Is it always true that if; f(x) = f '(x), then; f (x) =  \int f '(x) ?
That is, the negative of a derivative...

Dec108 08:35 PM
adriank

1 
1,053 
I got a relation as follow
\lambda_k = \frac{2 n(\lambda_k) L}{k}
where \lambda_k is a wavelength at mode k, k...

Dec208 01:16 PM
CompuChip

1 
1,042 
Sorry me again
THE CRC tables define the above integral as
using sqrt(x^2a^2)
let t(x) = sqrt(x^2  a^2)
...

Dec508 10:45 AM
morphism

1 
2,113 
kindly make h or d the subject of the formula
y={1/2pi(dh)}ln(d/h)
thank u
Moderation Note: email address...

Dec508 10:08 AM
Defennder

1 
1,023 
Ok, so a teacher showed an example in class awhile back. So im going over my notes right now, and I don't understand a...

Dec708 05:07 AM
tinytim

1 
1,374 
P=P0ekt
I'm given that a population doubles in number in 4 hours. Does that mean the k in the function equals 0.5...

Dec908 07:43 AM
Defennder

1 
1,214 