Indefinite Integration

$\frac{-1}{2}\left(1+\sec ^6 x\right)^{\frac{1}{3}}+C$

$2\left(1+\sec ^6 x\right)^{\frac{4}{3}}+C$

$\frac{-1}{2}\left(1+\cos ^6 x\right)^{\frac{1}{3}}+C$

$2\left(1+\cos ^6 x\right)^{\frac{1}{3}}+C$