# Math Help - integration help

1. ## integration help

I need help integrating teh following functioN:

(x^3)(e^(x^2)

2. Originally Posted by messianic
I need help integrating teh following functioN:

(x^3)(e^(x^2)
Apply the substitution $u=x^2$ to get $\tfrac{1}{2}\int ue^u\,du$.

Then apply integration by parts.

Can you take it from here?

3. well it is x^3 so the u in the integral should be u^3/2 right? This complicates things. Can you explain further

4. Originally Posted by messianic
well it is x^3 so the u in the integral should be u^3/2 right? This complicates things. Can you explain further
Wrong. Have you been taught how to do a 'u-substitution' when integrating?

5. yes but a while ago.