MCQ
$\int_0^{\pi /4} {\frac{{1 + \tan x}}{{1 - \tan x}}\,dx} =$
- ✓$ - \frac{1}{2}\log 2$
- B$\frac{1}{4}\log 2$
- C$\frac{1}{3}\log 2$
- Dએકપણ નહીં.
$ = \left[ {\log \left\{ {\sec \left( {\frac{\pi }{4} + x} \right)} \right\}} \right]_0^{ - \pi /4}$
$= - \frac{1}{2}\log 2$.
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