# Homework Help: An integration problem

1. Feb 12, 2006

### itzela

I'm doing a diff eq problem and I got stuck on the part where I have to integrate
e^(x^2)dx. I tried using substitution but that didn't work ... any ideas?

2. Feb 12, 2006

### Tide

There's a good reason why you're getting stuck - there is no simple expression for the integral you're trying to evaluate.

3. Feb 13, 2006

### leon1127

if it is definite integral you can evaluate by double integral and transformation to polar. if it is indefinite, a good way to evaluate it is integrate its polynomial expansion. but itself doesnt have an antiderivative

4. Feb 13, 2006

### itzela

Got it =) Thanks for pointing me in that direction.