Mark against the correct answer in each of the following:

Question:

Mark $(\sqrt{)}$ against the correct answer in each of the following:

$\int \frac{d x}{(1-\tan x)}=?$

A. $\frac{1}{2} \log |\sin x-\cos x|+C$

B. $\frac{1}{2} x+\frac{1}{2} \log |\sin x-\cos x|+C$

C. $\frac{1}{2} x-\frac{1}{2} \log |\sin x-\cos x|+C$

D. none of these

Solution:

 

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