Question

What is the indefinite integral?

`int 3 sin(2x)/sin(x) dx`

Answer 1

Use the trig identity: `sin(2x) = 2sin(x)cos(x)` to rewrite the integrand.

Explanation:

`int3sin(2x)/sinx dx = int (6sinxcosx)/sinx dx`

`= 6int cosx dx = 6sinx +C`