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Calculus

- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
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Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:24 AM
micromass
1 40,086
Hey, everyone. I'm trying to prove the following: f_n and f_n are real-valued function in \Omega ...
Sep26-10 04:01 PM
Landau
1 773
Hi, for awhile I was agonizing over part b) of this proof of Theorem 3.2 in Lang's Complex Analysis. But I think...
Sep22-10 11:12 AM
Landau
1 2,128
Hope this does not sound vague! 1) I a looking at the Poisson's formula for the disk. Can somebody give me an...
Sep24-10 06:53 AM
hamster143
1 827
Can somebody give me an example whereby I use the inversion with respect to a circle (unit circle or otherwise) and...
Sep24-10 11:22 AM
HallsofIvy
1 1,741
I need help trying to factor a trinomial. It has been a while, and I cant remember how to factor a trinomial with...
Sep23-10 02:31 PM
LCKurtz
1 1,552
To find the volume generated by rotating an area bounded by 2 curves f(x) and g(x) around the x-axis we use the...
Sep23-10 08:54 PM
LCKurtz
1 938
I'm not sure I did this right. Someone please check me. ...
Sep24-10 12:10 AM
JThompson
1 830
I apologize that I am posting this in this section, but... I wish that people did not reply to a thread and then...
Sep24-10 03:53 PM
zhermes
1 680
This is an analysis exercise, I don't get the definition of S. Could anyone explain, please? See the attached pic.
Sep26-10 01:51 PM
LCKurtz
1 2,598
Hi, I'm stuck on this problem here about composite function, help is appreciated: Let g : -> be Riemann...
Oct1-10 02:50 AM
Eynstone
1 1,572
From what I know it is a plane that kisses a point on the curve at point t of curve f(t) and it is a plane normal to...
Sep28-10 11:58 AM
Petr Mugver
1 3,016
I'm sure this has been asked before, but the proofs I've seen use the fact R is connected or continuous functions is...
Sep28-10 04:51 AM
HallsofIvy
1 2,488
Hello all, indeed this is always a question in my mind. For a sequence, we can study the limit, let's say ...
Sep29-10 11:35 PM
Office_Shredder
1 717
How does one form a laurent series about the point z0 = 2i for the function: 4cos(z*pi) / (z-z0). Could one...
Sep30-10 11:08 AM
HallsofIvy
1 730
I have an function with 4 variables. Each of the 5 variables are bounded between to real numbers. Is there an easy...
Oct1-10 08:39 PM
hotvette
1 6,819
Not a specific question per se but... Is it possible to convolve a discrete-time signal with a continuous-time one?...
Oct6-10 05:52 AM
Petr Mugver
1 4,487
Hi guys, I've just started university this week and I've been given a mountain of assignments. One of them has a...
Oct9-10 08:11 AM
HallsofIvy
1 2,737
Hi. I'm a first-year calculus student and I'm fairly behind with my work. The transition is tough and when i read my...
Oct11-10 02:29 PM
Wizlem
1 1,557
Hi, I work in a computational neuroscience lab, where we study human perception using Bayesian models. In our...
Oct12-10 06:43 PM
Feldoh
1 1,451
Hello all, May someone help me on this question: Suppose the map F is an isometry which maps a dense set H ...
Oct13-10 04:24 AM
wayneckm
1 685
Hi all!! I hope this is the right section to post such a question... I'm studying the theory of resolvent from the...
Oct20-10 11:33 PM
Hawkeye18
1 1,924
I have been told that the following integral can be expressed analytically as a combination of error functions of t. ...
Oct14-10 09:56 AM
JJacquelin
1 918
I was reading a book on the zeta function and came across this attributed to Jacobi. I have no idea where to find a...
Oct16-10 06:34 AM
jackmell
1 2,848
First let me write out the definition of a manifold given in my book: Let k > 0 . A k-manifold in \mathbb{R}^n ...
Oct18-10 08:26 PM
JG89
1 699
I need help with this one: Find fxy in: ln(x+y)/(xy) .. the ln applies to the whole problem.
Oct17-10 05:45 PM
arildno
1 742
If you differentiate the formula for the volume of a solid sphere, 4/3 \pir3, you get 4\pir2, the formula for the...
Oct18-10 05:38 PM
tiny-tim
1 3,314
does anyone know a general way to deal with (infinity)(infinity) type of limits !!! pl. help!!
Oct20-10 12:51 PM
Mark44
1 859
I am trying to figure out which substitution to use to get this integral done: \int \frac{du}{\sqrt{u-u^2} \cdot...
Oct24-10 09:11 AM
HallsofIvy
1 803
How would you find the volume in the first octant of the solid bounded by the cylinder y2+z2=9 and x=6? I tried...
Oct25-10 10:03 AM
HallsofIvy
1 2,735
I am interested in knowing under what conditions the Euler-Maclaurin summation formula converges (including the...
Oct29-10 11:36 PM
TriTertButoxy
1 1,584
I have an integral: {\int}^{\pi}_{0}A(x)sin(x) exp(-bsin(x)^{2})dx=1 I want to solve for A which is a function...
Oct27-10 10:33 AM
Mute
1 677
Dear All I am having trouble understanding the gradient vector of a scalar field (grad). I understand that you...
Oct27-10 02:41 PM
HallsofIvy
1 1,587
I have a definition that a piecewise continuous function is one which is continuous on all but a finite number of...
Oct28-10 04:43 AM
Grufey
1 1,080
I am currently facing a problem of integrating exp(-ax^2)*erf(bx+c)*erf(dx+f) with the integral boundaries 0 and...
Oct30-10 07:17 PM
bjteoh
1 1,182
\Sigma_{k=0}^{\infty}\frac{a^k}{(k-x)!} Thanks!
Oct30-10 08:47 AM
sylas
1 634
Question: Let f: \mathbb{R}^3 \rightarrow \mathbb{R} be given by f(x,y,z) = sin(xyz) + e^{2x + y(z-1)} . Show that...
Oct30-10 01:58 PM
arildno
1 852
http://i.imgur.com/uhqc5.jpg I am trying to make sense of this proof in my textbook and find myself confused by a...
Oct30-10 06:15 PM
micromass
1 986
It seems to me that the standard definition of the complex Arcsin (the principal branch) is something like this:...
Nov1-10 04:08 PM
RoNN|3
1 1,904
Hey, I have a calculus 3 test coming up that involves calculating the mass of an object using a density function. I...
Nov1-10 12:00 PM
HallsofIvy
1 1,780
Hey guys, How can I proove the cardinal number of R is equal to the cardinal number of {x|0<x<1}?? Thanks~~~
Nov3-10 10:28 AM
micromass
1 734

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