- #1
Slimsta
- 190
- 0
Homework Statement
1.[tex]$\int x^ne^xdx$[/tex]
2.[tex]$\int \sin ^nxdx$[/tex]
Homework Equations
[tex]$ \displaystyle \Large \int fg dx = fg - \int gf' dx$ [/tex]
The Attempt at a Solution
1. f=xn
g'=ex
g=ex
f'=nxn-1
then just plug it in the formula? i tried but i don't get the right answer..
2. i have no idea how to even start..
the antiderivative of sinnx is [(sinx)n+1]/(n+1) ?