Question

integral of cot^4 (x) csc^4 (x)?

Answer 1

\[\large \int \cot^4 x \csc^4x ~dx \\\large = \large \int \cot^4 x (1+\cot^2x) \csc^2 x ~dx\]

Answer 2

sub \(\large u = \cot x\)

Answer 3

ah..i got it...\[-\frac{ u ^{7} }{ 7 } - \frac{ u ^{5} }{ 5 } +c\]

Answer 4

looks good, get back to x's...