A Level

MATHEMATICS · Single correct · A Level · Mathematics · Integration · Integration

Problem

\int (3\operatorname{cosec}^2 x + 2\sin 3x)\,dx =

(a)

3\cot x + \frac{2}{3}\cos 3x + c

(b)

-\left(3\cot x + \frac{2}{3}\cos 3x\right) + c

(c)

3\cot x - \frac{2}{3}\cos 3x + c

(d) None of these