# Math Help - Some Integration Problems

1. ## Some Integration Problems

Hey everyone, I have a couple of questions on integration:

1. $\int x(lnx)^4dx$

2. $\int arctan(7z)dz$

Peter

2. For the first one, use integration by parts,

$u = (lnx)^4$

$dv = x$

For the second one, I think a substitution is required... *checking*

EDIT: Yes take $atan(7z) = u$

Then,

$7z = tan u$

$7dz = sec^2u\ du$