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- Elementary functions. Calculating limits, derivatives and integrals. Optimization problems
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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:24 AM
1 46,047
I'm have some trouble distinguising definitions and require some help please: is the epsilon-n def. for...
Dec4-05 10:18 AM
5 2,799
Suppose you are given the equation of a line, and a given cosine function that the line intersects. How do you solve...
Dec3-05 12:39 PM
6 3,121
Sorry if this is a wrong place to post this. What does it mean that a turing machine M recognize language A? Does...
Dec3-05 03:27 AM
5 5,117
I understand hhow to use the chain rule for a simple 2 part composite function, however, I tend to have problems when...
Dec3-05 01:05 AM
4 2,039
If f is differentiable on (a,b), does it imply that f' is continuous on (a,b)? If so, is there a way of proving it?
Dec2-05 01:19 PM
11 8,271
I'm now studying Lebesgues measure on R^n, and when we finished constructing L (all measurable sets), we moved on to...
Dec1-05 10:05 AM
matt grime
15 2,330
So, I had a question for all of you, regarding the relationships between area and circumference, and surface area and...
Nov30-05 02:29 PM
5 10,610
eval. double integal sprt(1+x^2+y^2)ds S is helicoid and r(u,v) = ucos(v)i+usin(v)j+vk, with 0 <=u<=4 and 0<=v<=4pi...
Nov29-05 03:39 AM
1 840
Hi everyone I need some help proving Pedoe's Inequality for two triangles, which states that ...
Nov28-05 03:50 AM
8 1,866
Could somebody explain with due brevity why/how the set of p-adic integers is homeomorphic to the Cantor set less one...
Nov27-05 11:39 AM
matt grime
1 2,519
hi there im confused with this question.. Integrate 1) Sin(1/z) dz and 2) Z sin (1/Z^3) where Z is...
Nov27-05 07:05 AM
3 1,303
I attempted to prove the following equality, but to no avail. Anyone is willing to lend a hand? \int_0^{\infty}...
Nov27-05 07:03 AM
5 1,361
This should be a proof of the fact that exp(x)*exp(y)=exp(x+y). Have a look at it: \begin{align*}...
Nov25-05 11:08 AM
4 3,730
How does one conclude that \frac{d^{2} y}{dx^{2}} = \frac{dy\'/dt}{dx/dt} ? Thanks
Nov25-05 07:35 AM
7 3,309
The function of arc-length c that minimises \int^b_{a}{y dx} is the catenary, but why? I have tried using calculus of...
Nov25-05 12:03 AM
16 1,683
Id like to know if the following argument is valid. Take an arbitrary function f(x). f(x)dx can be thought of an...
Nov24-05 11:37 PM
7 1,726
Lately, we've been going over these two theorems in class. I have a few questions to put forth. 1) I know that in...
Nov24-05 10:06 PM
3 3,555
Hi, I usually dont have any problems with Fubini's theorem, but there is something I just cant figure out. Let f be...
Nov24-05 02:59 PM
3 3,137
The covariant derivative is A^\mu_{\sigma} = \frac{\partial A^\mu}{\partial x_{\sigma}} + \Gamma^\mu_{\sigma...
Nov23-05 02:13 PM
31 3,021
Okay... i did solve it, but i wonder why the answer is what it is. "a string 10 m long is cut in 2 so that one...
Nov23-05 12:12 PM
4 1,325
Hello I'm suppose to show Given z^4 + z^3 + z^2 + z + 1 = 0 where z = cos(\frac{2 \pi}{5}) + i sin(\frac{2...
Nov23-05 12:12 PM
15 1,554
Hi I have a question regarding the use of de moivre formula: I'm presented with a complex number z = (cos(v) + i...
Nov23-05 09:03 AM
3 2,361
I am reading a electrical engineering book about digital signal processing, in the process, those fourier transform...
Nov23-05 02:04 AM
3 3,568
okay im supposed to prove the derivitive of: sqrt x/y + sqrt y/x is equal to y/x okay im stuck where i have...
Nov22-05 11:16 PM
3 980
hi everyone, im having trouble with a few problems, i was wondering if anyone can help me thank. 1.) given r= 11/22 ...
Nov22-05 04:49 PM
3 3,867
given that near (1,1,1) the curve of intersection of the surfaces: x^6 + y^4 + z^7 -3xyz = 0 and xy + yz...
Nov21-05 10:36 PM
1 932
I apologize right now for the fact that I have no idea how to use LaTeX I can't figure out if the following...
Nov21-05 04:23 PM
2 1,654
Hello everyone, does someone know what the value of (with |x| < 1) is? I couldn't find it anywhere. :-( Are there...
Nov21-05 03:58 PM
1 1,215
I am familiar with the standard rule of mixed partial derivatives in that the order in which you partially...
Nov21-05 10:19 AM
3 1,640
I need help with this problem. Find dy/dx if e^2x = sin(x+3y) Any help would be great! I began by taking the...
Nov21-05 07:45 AM
13 1,857
can someone PLEASE help me wit this problem? i will be ETERNALLY GRATEFUL. THANK YOU!!. A light is suspended at a...
Nov21-05 06:46 AM
3 1,686
Hello. I'm trying to fit my data to the Gompertz Survival given by Carrie, denoted by y = exp I've tried Data...
Nov21-05 02:11 AM
0 2,429
Sorry..i posted this same question in another wrong section. This is the right one.. A line through the point...
Nov20-05 11:59 PM
1 1,161
i don't understand how to figure this problem out, and i really need the help. A kite is flying Y feet about the...
Nov20-05 03:20 PM
Pseudo Statistic
2 1,249
I was wondering if any one could double check my work to see if the following method is correct. I will also check it...
Nov19-05 02:58 PM
0 2,321
My friend told me that they had just learned an equation to find the length of a function. I decided that it would be...
Nov19-05 12:40 PM
4 11,858
How would you solve the following system of simultaneous equations for t and b? sin(pi*t) = 0 sin(pi*(t^2 +...
Nov17-05 08:59 PM
6 1,400
Count the number of integer solutions of (rather, # of integer lattice points such that) n+\sum_{k=1}^{n} \left|...
Nov17-05 05:44 PM
1 4,866
Hi, Is there a general extrapolation formula (or other *simple* quantitative technique) for projecting values in a...
Nov17-05 03:47 PM
2 3,525
Hi, it is probably a simple question, but it bothers me for quite some time. How can I calculate time that ball...
Nov17-05 07:45 AM
4 1,202

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