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- 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
1 40,149
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
1 774
I am trying to linearize a function, f(x), where x is a normally distributed N(0,1) random variable. How can I...
Sep15-10 04:05 PM
1 898
let be the functions f(x) and g(x) defined by an integral equation g(x)= \int_{0}^{\infty}dy K(yx)f(y)dy then...
Sep17-10 08:06 AM
1 619
I've been reading a complex analysis book which had an example showing \sum^\infty_{n=1}1/n \cdot z^n is convergent in...
Sep20-10 03:51 PM
1 959
Let 0<β<1 So, β^n -> 0 as n -> infty Also, we can find γ>1 so that {γ^n}*{β^n} -> 0 as n -> infty e.g. γ =...
Sep20-10 09:41 AM
Petr Mugver
1 776
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
1 2,135
Suppose that f:\mathbb{R} \to \mathbb{R} is continuous and f'(x_0) exists for some x_0 . Does it follow that f' exists...
Sep21-10 03:35 PM
1 826
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
1 829
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
1 1,745
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
1 1,554
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
1 938
I'm not sure I did this right. Someone please check me. ...
Sep24-10 12:10 AM
1 832
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
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
1 2,601
Hi, I'm stuck on this problem here about composite function, help is appreciated: Let g : -> be Riemann...
Oct1-10 02:50 AM
1 1,575
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 3,023
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
1 2,494
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
1 718
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
1 734
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
1 6,832
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 4,499
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
1 2,745
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
1 1,563
Hi, I work in a computational neuroscience lab, where we study human perception using Bayesian models. In our...
Oct12-10 06:43 PM
1 1,453
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
1 688
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
1 1,928
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
1 922
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
1 2,852
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
1 700
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
1 743
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
1 3,326
does anyone know a general way to deal with (infinity)(infinity) type of limits !!! pl. help!!
Oct20-10 12:51 PM
1 862
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
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
1 2,739
I am interested in knowing under what conditions the Euler-Maclaurin summation formula converges (including the...
Oct29-10 11:36 PM
1 1,587
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
1 678
Dear All I am having trouble understanding the gradient vector of a scalar field (grad). I understand that you...
Oct27-10 02:41 PM
1 1,591
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
1 1,082
\Sigma_{k=0}^{\infty}\frac{a^k}{(k-x)!} Thanks!
Oct30-10 08:47 AM
1 635
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
1 853

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