Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int \tan ^{-1}(\operatorname{cosec} x-\cot x) d x=?$
A. $\frac{x^{2}}{4}+C$
B. $\frac{-\mathrm{X}^{2}}{4}+C$
C. $\frac{x^{2}}{2}+C$
D. $\frac{-x^{2}}{2}+C$
Solution:
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