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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 46,223
Can anybody please show me an example of a convergent sequence of real valued functions of a real variable where the...
Oct12-09 07:45 PM
4 1,391
I need to compute the normal velocity of an evolving front in two dimensions (x,y). Let's say that I have collected...
Oct12-09 02:39 PM
0 1,437
Hello people, I'm creating an algorithm on Matlab and need to find the distance between two points in spherical...
Oct12-09 02:05 PM
5 20,538
i have these two question i need help 1. given y=3x2 find the percentage error in y if there is a 3.5% in the...
Oct12-09 01:02 PM
1 935
How close to 4 do we have to take x so that 3x + 2 is within a distance of (a) 0.1 and (b) 0.01 from 14? ...
Oct12-09 01:01 PM
1 528
is this trick valid at least in the 'regularization' sense ?? for example \int_{-\infty}^{\infty}...
Oct12-09 07:36 AM
4 997
I'm having trouble calculating an integral: \int_0^1{\frac{1}{1+\sqrt{x}}dx} I decided to do a substitution: ...
Oct12-09 05:22 AM
5 21,113
I've been trying to prove that if the following statement holds for all (x,y)ER^2, f must be a linear function: ...
Oct12-09 01:09 AM
1 946
Preparing for the math test, and cannot understand what to do for one of my practice problems: I need to find if...
Oct11-09 04:29 PM
3 4,431
Hi, Can anyone help me integrate : Integral sqrt ( 4 - x^2) dx Some ideas: Make a subsitution x2 = cos...
Oct11-09 02:12 PM
24 63,403
I'm a physics major (undergrad) who wants to learn real and complex analysis, but don't have the time to do the...
Oct11-09 01:41 PM
4 6,070
My course is using Rudin, however I've heard that it's not the best text for learning measure theory and extremely...
Oct11-09 01:39 PM
4 4,815
I was given f(x,y,z) = x4 + y4 + z4 - x2 - y2 - z2. I found that (or least I think it's these) x = 0 & \pm1/\sqrt{2},...
Oct9-09 09:43 PM
2 736
1. The problem statement, all variables and given/known data Can someone help me take the derivative of the integral...
Oct9-09 07:20 PM
3 977
Can you always just swap the limits of integration and flip the sign of a one-dimensional integral or is there a time...
Oct9-09 05:46 PM
2 7,988
Hi, Im having trouble understanding something in one of my Dynamics lectures. The lecturer said that: dr/dt...
Oct9-09 12:49 PM
2 1,186
given sequences \left\{x_n\right\}, \left\{y_n\right\}, is it true that \sqrt{ \Sigma_{n=1}^{\infty} (x_n - y_n)^2}...
Oct9-09 09:31 AM
6 3,908
Can someone explain to me this equation I stuck with. I can't get the right part of it. ...
Oct9-09 03:33 AM
4 851
How do you compute the area defined by a rope which spirals around a circle? Here is a specific example of what I...
Oct8-09 09:15 PM
3 1,575
Hi, I'm from in Brasil and I need some help.. I have no sucess resolving Integral dx .. Using Integration by...
Oct8-09 05:29 PM
7 25,951
I guess the following identity isn't right. Can anyone tell me what the LHS is really equal to?...
Oct8-09 02:05 PM
1 1,096
what potential applications has the Riemann-Hilbert problem? is there more than one Riemann-Hilbert problem ? for...
Oct8-09 02:03 PM
0 724
I want to ask if you how to compute such integral like: int(t**2*BesselJ(1,a*t)*BesselJ(1,b*t)*BesselJ(1,c*t),...
Oct8-09 08:19 AM
1 1,199
So, a certain discussion occured in class today... If f is differentiable, is f ' continuous? At first sight,...
Oct8-09 06:14 AM
5 946
So I have a matrix of electric potentials in excel that were experimentally attained, effectively a scalar field...
Oct7-09 06:04 PM
0 2,672
Hi all, Been a looooong time since I had to use calculus for anything, but I distinctly remember failing this...
Oct7-09 03:30 PM
1 794
Excuse me my lack of expertise, but it is very curious. Recently, I have found a note, which I qualify 'absolutely...
Oct7-09 10:34 AM
9 3,060
x/ I'm wondering if it's even possible to imagine what a graph of this fxn would look like, or do you definitely...
Oct6-09 02:13 PM
2 770
Let M be a subspace of l^infinity consisting of all sequences x = (x_j) with at most finitely many nonzero terms. Find...
Oct6-09 11:36 AM
18 9,961
I evaluated a limit which is I plugged value 2 into the limit. So, -2(4)+8/2-2 and I got 0/0. However, I came up...
Oct6-09 10:57 AM
4 782
To calculate the centroid of a cone, it seems that you have to use calculus. It comes out to be h/4, where h is the...
Oct5-09 11:27 PM
1 2,887
A CAT scan produces equally spaced cross-sectional views of a human organ that provide information about the organ...
Oct5-09 09:25 PM
1 2,814
Consider a (possibly complex-valued) function F(z) = F(x,y) of two variables. Can it make sense to talk about the...
Oct5-09 07:16 PM
4 6,057
Is there a convenient sufficient condition for knowing whether a function of two variables is differentiable? Isn't it...
Oct5-09 03:51 PM
3 6,729
Is saying "f is differentiable" equivalent to saying "f is analytic/holomorphic?" Also, does it make sense to talk...
Oct5-09 11:35 AM
3 1,416
I have no idea where to start with this. Sorry about the format, I don't know where to make it into an easier to read...
Oct5-09 06:28 AM
3 1,744
given a differentiable function g(x) we know that in many cases if we define g(nx) for n--> oo , then we have no...
Oct5-09 06:01 AM
0 632
Question: Attached. Attempt. I know I have to find P1 and p2 depending on x and L to satisfy ax^2 + bxy +...
Oct5-09 03:46 AM
2 704
I am reading an example from a book on Volterra equations but there's one point i dont understand. the book says: for...
Oct4-09 05:33 PM
3 685
Hey guys, this isn't a math problem for homework or for a course, but simply for my own interest... This is one that I...
Oct4-09 05:03 PM
1 1,313

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