\( \int_{0}^{\pi / 2} \frac{1}{\left(a^{2} \sin ^{2} x+b^{2} \cos ^{2} x\right)^{2}} d x \) का म...
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\( \int_{0}^{\pi / 2} \frac{1}{\left(a^{2} \sin ^{2} x+b^{2} \cos ^{2} x\right)^{2}} d x \) का मान है-
(A) \( \frac{\pi}{4 a^{2} b^{2}} \)
(B) \( \frac{\pi\left(a^{2}+b^{2}\right)}{4 a^{3} b^{3}} \)
(C) \( \frac{\pi\left(a^{2}+b^{2}\right)}{4 a^{2} b^{2}} \)
(D) इनमें से कोई नहीं।
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