1. The problem statement, all variables and given/known data use the comparison theorem to show that the integral of e^(-x^2) from 0 to infinity is convergent. 2. Relevant equations None 3. The attempt at a solution In class we have never dealt with using the comparison theorem with the exponential function so I was not sure what I function I would compare it to in order to solve this problem. Could I compare it to something like e^(-x)?