Question

Integrate tan^3(x/4)sec^2(x/4)

Answer 1

\[\Large \int \tan^3\left(\frac{x}4\right)\sec^2\left(\frac{x}4\right)dx\]

It's like it's just begging for a substitution ^_^

Answer 2

\[\int\limits_{?}^{?}\tan ^{3}\frac{ x }{ 4 }\sec ^{2}\frac{ x }{ 4 }\]

Answer 3

Mine's better looking... anyway, the presence of a \(\large \sec^2\) which just happens to be the derivative of \(\large \tan\) may indicate that you use a substitution

Answer 4

Letting \(\large u = \tan\left(\frac{x}4\right)\) should do the trick :D

Answer 5

I'm guessing you already have an answer? :D

Answer 6

Yes, thank you

Answer 7

Good :)