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Prove-that-0-1-sin-x-cos-1-x-dx-gt-1-e-2-




Question Number 14646 by tawa tawa last updated on 03/Jun/17
Prove that:  ∫_( 0) ^( 1)  sin(x) cos^(−1) (x) dx > (1/e^2 )
$$\mathrm{Prove}\:\mathrm{that}:\:\:\int_{\:\mathrm{0}} ^{\:\mathrm{1}} \:\mathrm{sin}\left(\mathrm{x}\right)\:\mathrm{cos}^{−\mathrm{1}} \left(\mathrm{x}\right)\:\mathrm{dx}\:>\:\frac{\mathrm{1}}{\mathrm{e}^{\mathrm{2}} } \\ $$

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