Question Number 70150 by necxxx last updated on 01/Oct/19
$${prove}\:{that}\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}} \sqrt{\left(\mathrm{4}−{sin}^{\mathrm{2}} {x}\right)}{dx}\:<\:\frac{\pi\sqrt{\mathrm{14}}}{\mathrm{4}} \\ $$
Commented by necxxx last updated on 01/Oct/19
$${please}\:{help} \\ $$