INTEGRATE tan4x with respect to x
let 4x = u
dx = du/4
integral of tan 4x* dx =
(1/4) integral of tan u du
= (-1/4) log(cosu)
= (-1/4) log(cos4x)
dx = du/4
integral of tan 4x* dx =
(1/4) integral of tan u du
= (-1/4) log(cosu)
= (-1/4) log(cos4x)