You dont need by parts here..
just use substitution rule and let
im currently trying to integrate:
x²e^(x^3) dx
u = x² dv = e^(x^3)
du = 2dx v = e^(x^3)
and now using integration by parts formula i get
= ( x² )( e^( x^3 ) ) - integrate[e^(x^3)2xdx]
im a lil baffled on what to do next because i still cant integrate the bolded section! thx