Question
$\int_{\pi /6}^{\pi /4} {{\rm{cosec}}\,2x\,dx = } $
$ = \frac{1}{2}\left[ {\log \tan \frac{\pi }{4} - \log \tan \frac{\pi }{6}} \right] = \frac{1}{2}\log \sqrt 3 $.
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महत्तम पूर्णांक फलन है। तब
और $S_{3}=\sum_{j=1}^{10} j^{210} C_{j}$
कथन $1: S_{3}=55 \times 2^{9}$
कथन $2: S_{1}=90 \times 2^{8}$ और $S_{2}=10 \times 2^{8}$