Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int x^{3} \cos x^{2} d x=?$
A. $x^{2} \sin x^{2}+\cos x^{2}+C$
B. $\frac{1}{2} x^{2} \sin x^{2}+\frac{1}{2} \cos x^{2}+C$
C. $-\frac{1}{2} x^{2} \sin x^{2}+\frac{1}{2} \cos x^{2}+C$
D. none of these
Solution:
