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Definite Integration

WB JEE 2023

MCQM+2 / -02023

মনে করো \(\left[ {0,{\pi \over 2}} \right]\)-তে সংজ্ঞাত f অ-ঋণাত্মক অপেক্ষক। \(\int\limits_0^x {(f'(t) - \sin 2t)dt = \int\limits_x^0 {f(t)\tan t\,dt} } ,f(0) = 1\) সেক্ষেত্রে \(\int\limits_0^{{\pi \over 2}} {f(x)dx}\) হবে

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