# Integration by Parts homework assistance

1. Nov 20, 2012

### AryRezvani

1. The problem statement, all variables and given/known data

∫x3e5x2 dx

2. Relevant equations

uv-∫vdv

3. The attempt at a solution

I've tried this one a few times, but keep getting answers that are just out there. Could someone, if possible, work out just the beginning.

2. Nov 20, 2012

### Curious3141

OK, just one hint to get you started. You should start by expressing the problem as:

$$\int (x^2).(xe^{5x^2})dx$$

3. Nov 20, 2012

### AryRezvani

Hmm okay, got it.

So let's say U = x2
dU = 2x

dv = xe5x2
V=1/10e5x2

Then, plug into the equation, and you get....

(x2)(1/10e5x2) - ∫(1/10e5x2)2x dx

EDIT: Just got it, thanks a lot for your time :).

Last edited: Nov 20, 2012
4. Nov 20, 2012

No worries.