MCQ
જો $\int_{ - a}^a {\sqrt {\frac{{a - x}}{{a + x}}} \,dx = k\pi ,} $ તો $k = $
- A$ - a$
- B$ - 2a$
- C$2a$
- ✓$a$
So comparing it with the given value, we get $k = a$.
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વિધાન-$2$ : ${\tan ^{ - 1}}\left[ {\frac{{1 + \log {x^2}}}{{1 - \log {x^2}}}} \right]$ = ${\tan ^{ - 1}}\,1 + \,{\tan ^{ - 1}}\left( {\log {x^2}} \right)$