Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int e^{x}\left(\cot x-\operatorname{cosec}^{2} x\right) d x=?$
A. $-e^{x} \operatorname{cosec}^{2} x+C$
B. $e^{x} \cot x+C$
C. $-\mathrm{e}^{\mathrm{x}} \cot \mathrm{x}+\mathrm{C}$
D. None of these
Solution:
