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