MCQ
$\int\limits_0^{\frac{\pi }{2}} {\log \left( {\frac{{a + b\sin x}}{{a + b\cos x}}} \right)} \,dx = ........$
- ✓$0$
- B$\frac{\pi }{2}$
- C$\frac{\pi }{4}$
- D$\pi ab$
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