Question

is my approach to this integral question correct? http://gyazo.com/cec8acd650f95ab9b45e92421cab6c7b

Answer 1

not too sure what you did there

but cos is the derivative of sin soo:

\[\int f'(g(x))~g'(x)~dx=f(g(x))...\]

Answer 2

why do that

Answer 3

u already got sin and cos there

Answer 4

the only thing missing is a constant to shore things up