coomast,
Thanks. Thats exactly what I was looking for. My mind was stuck in separating variables as x^2 and exp(-x^2). However, the useful way to seprate is x and x*exp(-x^2). Thanks again.
alxm, I don't know whether your approach is correct. But its pretty straightforward with 'multiplying integration'. You can find a method somewhere on the web.
My problem is trying to use error function approach.
Can anybody show me how to integrate x^2*exp(-x^2) between the limits 0 to infinity(symbol=00) and 1.5 to infinity with detail steps. I want this by using error function table. I know the 'multiplying integral method'. Here is what I did so far
int(0,00) x^2*exp(-x^2)...