Find the indicated derivative or value and simplify.

y$=$e$^(2$x$)$sec$3$x$,($d$^(2)$y$)/($dx$^(2))$

Show me the steps to easily prove

y$^(\text{'}\text{'})=$e$^(2$x$)$sec$3$x$[13+12$tan$3$x$+18$tan$^(2)3$x$]$

is the right solution of the problem.