A Level

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

Problem

\int \frac{3x^2}{x^6 + 1}\,dx =

(A)

\log(x^6 + 1) + c

(B)

\tan^{-1}(x^3) + c

(C)

3\tan^{-1}(x^3) + c

(D)

3\tan^{-1}\left(\frac{x^3}{3}\right) + c