Question

Hmm, this one doesn't seem to be working out, so I'll pose it as a open question to anyone who wants to take a crack at it:
\[\huge \int\limits e^{\tan (9x)} \sec^2 (9x) dx\]
I'm using the substitution method twice with these subsitutions:
u = 9x , du / 9 = dx , w = tan(u) , dw = (sec(u))^2 du
As always the person who can show quality steps which lead to the answer get's a thank-you medal :-)