A Level

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

Problem

Evaluate

\displaystyle \int e^{x}\cos x\,dx

. (a)

e^{x}\sin x + C

(b)

\displaystyle \frac{e^{x}(\cos x+\sin x)}{2}+C

(c)

\displaystyle e^{x}(\cos x+\sin x)+C

(d)

\displaystyle \frac{e^{x}(\cos x-\sin x)}{2}+C