Recent content by cAm

thanks. and, no, heh, no way in hell are we keying in the data. we have a point scanner scanning in points in 3space, and our program finds the edges of the object, and finds the curves of the edges via regression. edit: that's great, it takes it 2.9889 x 10^138 centuries to do a...

well, I'm looking at 50+ degree polynomials... what method do you think would work best for those? (yeah, this is a bit of a crazy project...)

If you look through the link i posted in my last, you'll see there are many sums from i = 1 to n, and I'm not really sure how to cancel those out using gaussian elimination. I'll look into that geosonel, thanks.

= bad deal for computer code, and bad deal for dealing with summation. Basically what i have to do, is turn THIS: http://mathworld.wolfram.com/LeastSquaresFittingPolynomial.html into C++ code... edit: and thanks lurflurf, that helps a little bit, though I'm still not sure how i can...

Matrices, Transposes, and Inverses. --- Help? Say, you have Matrix A, Y, and a matrix of coefficients C not neccissarily square, and A * C = Y. To solve this, i would think to multiply both sides by the inverse of A, but since it's not necessarily square that won't work. I've seen a solution...

well, suppose i don't need it for statistical purposes, so it's meaninglessness in that fashion doesn't matter. Say i just have that set of points, i know nothing else about them. What would be the best way to find a function that covered those points, either directly covering them, or fitting...

Say i have a set of points that aren't necessarily linear, but are planar, and all follow a 'general' trend in the same direction. Say, something like this: http://img343.imageshack.us/img343/2218/pointdistribution1jo.jpg This is an entirely random example, but hopefully it'll help you...

heh, been away from the comp for a while, thanks for the replies. the reason for the low budget is that unless i can get a grant from somewhere, my high school physics dept. would have to foot the bill. I need this for a project in which we have a robot draw for us a 3d image of wherever...

(sorry if this is in the wrong forum) Does anyone know where a good laser range finder can be purchased, for a relatively small amount of money. It needs to have a range of 1m to 200m (preferably more), with high accuracy (couple centimeters). I've been looking for a while, and so far, I've...

sounds like you should do a math major. you're obviously much better at math, and enjoy it much more.

That's what i always thought, but my teacher is specifically saying that if we use an 'indefinate integral' then we'll lose some points. Whereas, an antiderivative is fine.

hmm... we've beent tought that indefinate integrals are undefined, though we can do antiderivatives. And, do you know what the geometrical representation is, even if it is hard to conceptualize in 4d?

small bump?

we recently started integrals over the complex plane, in complex analysis. But, I am confused on the iterpretation of some of it. From what I've heard/understand, there Is no geometrical interpretation of a complex integral. Why is this? Also, why is it 'illegal' to do an indefinate integral...

On my tests (high school, physics c), we're given any constant/formulae we want. I think it's pretty standard. (doesn't the AP test even give you a big sheet of formulae/constants?)