यदि \( I_{n}=\int_{0}^{\pi / 2} x^{n} \sin x d x \) तो \( I_{4}+12 I_{2} \) बराबर है- (A) \( 4 \...
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यदि \( I_{n}=\int_{0}^{\pi / 2} x^{n} \sin x d x \) तो \( I_{4}+12 I_{2} \) बराबर है-
(A) \( 4 \pi \)
(B) \( 3\left(\frac{\pi}{2}\right)^{3} \)
(C) \( \left(\frac{\pi}{2}\right)^{2} \)
(D) \( 4\left(\frac{\pi}{2}\right)^{3} \)
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