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

Feb2313 09:24 AM
micromass

1 
40,144 
consider the following image
http://i.imgur.com/4IrsvlR.png
(the red is the surface area element and the green...

Feb1214 08:07 AM
HallsofIvy

1 
405 
Hi,
I would like to confirm my intuition about a bessel integral from you guys.
The integral is: Integrate ]...

Feb1214 04:56 AM
JJacquelin

3 
300 
Hello,
I have been working on my master thesis topic and have been struggling to find a solution to a particular...

Feb1214 02:33 AM
Fjolvar

10 
656 
Hello everyone! I'm studying out of Spivak's calculus on my own and ran into a problem I can't explain on Theorem 1 of...

Feb1114 08:15 PM
CRichard

4 
461 
Prays the CFT that all function f(x) can be expressed how the integral of its derivative more an initial...

Feb1114 03:30 PM
mathman

4 
336 
Hi everyone,
What does \int \vec{f} × \vec{dl} mean? does it mean "The Line Integral of Vector Function on a...

Feb1114 07:23 AM
Simon Bridge

7 
454 
Hi All,
I met the following function to evaluate,
$$v(x)=\int_{\infty}^{a} G(t) ln(\vert t  x \vert)...

Feb1014 12:20 PM
muzialis

2 
315 
Hi, if oyu look at question 16b in the link below in order to get the second derivative wrt to t they take the square...

Feb1014 09:07 AM
Sunfire

2 
341 
http://www.physics.udel.edu/~watson/phys208/exercises/kevan/efield1.html
I'm having trouble understanding the...

Feb914 04:13 PM
tinytim

1 
325 
Please delete. I neglected to read the forum guidelines regarding my type of post. Apologies.

Feb914 06:28 AM
Snoozems

0 
300 
Level function
= (1/r^2) (x^2 + y^2 + z^2) = 1
Vector , , )] = parametric equation to sphere Level function
...

Feb814 08:12 AM
clairaut

16 
560 
Hi guys,
I've been using this site for a while now, but this is going to be my first post. I want to pick your...

Feb814 05:52 AM
tx213

2 
336 
Okay I will try to make this as straightforward and clear as possible. My calculus background is rusty because it's...

Feb714 05:13 PM
Chestermiller

5 
433 
I have a probability distribution as follows:...

Feb714 07:28 AM
imtitanium

6 
788 
This is not homework it's just an equation I pulled out of the air and have been trying to solve
Derivative of...

Feb714 03:38 AM
stevmg

9 
802 
O.K. , this question is inspired by a physics class I'm taking where we're working out the expectation values of wave...

Feb614 10:57 PM
Shyan

1 
293 
I know what a complex number is. Learned it way back when I took college classes. I know it is a number that has a...

Feb614 10:56 PM
Pythagorean

1 
318 
Can anybody please help me understand the computation of the integral in the attached image. I shall be grateful.

Feb614 09:33 AM
HallsofIvy

3 
391 
I can't seem to quite comprehend the level curves for f(x,y)=xy. I realize this should be very simple yet the answer...

Feb514 11:49 PM
Shyan

1 
350 
What's the difference between these three?
I only know Taylor series and its variants which I suppose is called power...

Feb514 06:18 AM
Avichal

2 
318 
hey pf!
can someone please explain physically what the dyadic product represents: \vec{a} \vec{b}
i know its a...

Feb514 12:36 AM
joshmccraney

3 
339 
Here is the beast
\iint_{(ax+\mu _{1})^{2}+(bx+cy+\mu _{2})^{2}\leqslant z}\frac{1}{2\pi \sigma...

Feb414 12:06 PM
Jeff.Nevington

2 
1,085 
Has anybody got an idea how to solve this integral. I tried integration by parts, and that made the things even more...

Feb214 05:23 AM
D H

1 
404 
hey pf!
can someone comment on this statement i believe to be true: a simply connected, curlfree vector field is...

Feb114 01:57 PM
FactChecker

10 
611 
I've been taking calculus for a while now and I was just wondering why natural logarithm is abbreviated as "ln" and...

Jan3114 12:18 PM
Jhenrique

8 
667 
If x^n=y^n , n= odd
Then x=y
I know that an odd is n=2k+1
So x^(2k+1)=y^(2k+1)
I don't know how to finish...

Jan3014 04:41 PM
Mark44

1 
374 
I want to show that a function x(a,b) is bounded by some value l, knowing that the extremes of the function occur when...

Jan3014 10:00 AM
jgens

10 
501 
Hey, everyone.
I am trying to find the power series of secant from the known power series of cosin, but my answer...

Jan2814 09:44 PM
HallsofIvy

1 
348 
Hey,
I am rather stuck on this gaussian integral....
I have come this far, and not sure what to do now:
\int...

Jan2814 03:17 PM
mathman

1 
369 
I'm teaching a course using D. V. Schroeder, An Introduction to Thermal Physics, and there is a "derivation" in the...

Jan2714 09:01 PM
FactChecker

5 
552 
I have thomas calculus 12th edition, I like it, I study and understand calculus, but i need somebody to recommend...

Jan2714 08:31 PM
FactChecker

6 
550 
hey pf!
i'm trying to get a geometric understanding of the fundamental theorem: \int_a{}^{b}f'(x)dx=f(b)f(a)...

Jan2714 08:12 PM
FactChecker

4 
413 
Hi guys, I'm a bit rusty on optimization, but i remember enough to be able to setup some problems that I am facing in...

Jan2714 07:51 PM
FactChecker

5 
403 
Hello all,
Suppose I have a simple 1D signal and I want to compute the hessian. In that case, it should generalise...

Jan2714 11:08 AM
Stephen Tashi

1 
335 
I have been reviewing some details on the Dirac Delta function and I've hit a
little bit of a road block with trying...

Jan2614 10:57 AM
WannabeNewton

3 
433 
A limit of a sequence is definetely convergent if:
If for any value of K there is an N sufficiently large that an >...

Jan2614 04:40 AM
tinytim

1 
363 
http://en.wikipedia.org/wiki/Partial_fraction_decomposition
In general, if you have a proper rational function,...

Jan2514 09:52 PM
MathewsMD

6 
470 
Hey PF. I was wondering if anyone can help me figure out i can tell if certain functions are even or odd. For example,...

Jan2414 05:59 PM
PeroK

6 
394 
I have to integrate
partial^2f/partialx^2 partial^2f/partialy^2
in the variable xy
How to do this?

Jan2414 08:18 AM
HallsofIvy

1 
376 
Hi,
I'm working the following paper ""Plane waves viewed from an accelerated frame, K Srinivasan, L Sriramkumar, T...

Jan2314 10:07 AM
Jip

0 
430 