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Question Number 57422 by Abdo msup. last updated on 03/Apr/19
$${let}\:{U}_{{n}} ={n}\:\int_{\mathrm{1}} ^{\pi} \:\frac{{sinx}}{{x}^{{n}} }{dx} \\ $$$${calculate}\:{lim}_{{n}\rightarrow+\infty} \:{U}_{{n}} \\ $$