If ( kx^ 3 ,dx = 4x^ 4 +C )

MATHEMATICS · Single correct · CBSE · Mathematics · Integrals · Integrals

Problem

\displaystyle \int kx^{3}\,dx = 4x^{4}+C

, then the value of

k

is (a) 8 (b) 16 (c) 4 (d) 1