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" (ग) सिद्ध कीजिए कि : "int(0)^( pi)(x s...

" (ग) सिद्ध कीजिए कि : "int_(0)^( pi)(x sin x)/(1+cos^(2)x)dx=(pi^(2))/(4)

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int_(0)^( pi)(sin x)/(1+cos^(2)x)dx =

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