Can't integrate the "e"s here
Homework Statement
\int 2/e3x(6+e-3x)dx
Homework Equations
I have no idea as to what equations to use, other than \int eu du = e u + C
The Attempt at a Solution
\int 2/(6e[SUP]3x[SUP] +1) dx
u = 6e[SUP]3x[SUP] +1
du = 18e[SUP]3x[SUP] dx
and...