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JEE Mains · Maths · STD 12 - 7.2 definite integral

જો \(\int_0^{\frac{\pi}{4}} \frac{\sin ^2 x}{1+\sin x \cos x} \mathrm{~d} x=\frac{1}{\mathrm{a}} \log _{\mathrm{e}}\left(\frac{\mathrm{a}}{3}\right)+\frac{\pi}{\mathrm{b} \sqrt{3}}, \mathrm{a}, \mathrm{b} \in {N}\), તો \(\mathrm{a}+\mathrm{b}=\) ............

  1. A \(6\)
  2. B \(8\)
  3. C \(4\)
  4. D \(1\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(8\)

Step-by-step Solution

Detailed explanation

\( \int_0^{\frac{\pi}{2}} \frac{\sin ^2 x}{1+\frac{1}{2} \sin 2 x} d x=\int_0^{\frac{\pi}{4}} \frac{1-\cos 2 x}{2+\sin 2 x} d x \) \( \int \frac{1}{2+\sin 2 x}-\int \frac{\cos 2 x}{2+\sin 2 x}\) \( \left.\left(\mathrm{I}_1\right)-\mathrm{I}_2\right) \)…
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