# Integrate e^(-r^2)

by Zurtex
Tags: integrate
 HW Helper Sci Advisor P: 1,123 Nevermind sorry, think I've found a sufficent article on wikipedia to help me: http://en.wikipedia.org/wiki/Gaussian_integral
 HW Helper P: 3,353 From memory the Gaussian integral is from infinity to negative infinity..if you want something that act's as an anti derivative, try the Error Function ( erf(x) ) EDIT: ~sigh~ I just realised the erf(x) also has bounds, my bad.
HW Helper
P: 1,123
 Quote by Gib Z From memory the Gaussian integral is from infinity to negative infinity..if you want something that act's as an anti derivative, try the Error Function ( erf(x) ) EDIT: ~sigh~ I just realised the erf(x) also has bounds, my bad.
Thanks, the problem was actually in response to a house mate on a physics course who had this integral and was utterly perplexed how one would integrate it from negative to positive infinity. I remembered it was a standard integral but forgot the details how to do it, anyway in the end it turned out he was integrating over the wrong co-ordinates anyway and it was much more simple once he transformed the integral.

But thanks for trying