MCQ
$\int_{ - \frac{1}{2}}^{\,\frac{1}{2}} {\cos x\,\ln \frac{{1 + x}}{{1 - x}}dx} = . . .$
- ✓$0$
- B$1$
- C$2$
- D$ln \, 3$
$\cos x\ln \left( {\frac{{1 + x}}{{1 - x}}} \right)$ is an odd function, $ \because f( - x) = - f(x)$)
$\therefore$ $I = 0$.
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$-\cos \left(\frac{3 \pi}{4}-\mathrm{x}\right))$ નો વિસ્તાર મેળવો.