Question

integral of tan(x) sec^4xdx

Answer 1

So I started off doing sec^2(x) * tan(x) * sec^2(x)dx

Answer 2

then I turned it into (1+tan^2(x)) tan(x) sec^2(x) dx

Answer 3

now when I checked my answer with wolfram it decided to stop here and do u-sub

http://www.wolframalpha.com/input/?i=integral+tan%28x%29sec%5E4%28x%29