Question Number 42445 by maxmathsup by imad last updated on 25/Aug/18
$${find}\:{A}_{{n}} =\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{4}}} \:\:{tan}^{{n}} {t}\:{dt}\:\:\:{with}\:{n}\:{integer}\:{natural}\:. \\ $$
find-A-n-0-pi-4-tan-n-t-dt-with-n-integer-natural-