Question Number 88681 by NicolasXd last updated on 12/Apr/20
$$\mathrm{If}\:\:{f}\left({x}\right)\:\mathrm{is}\:\mathrm{a}\:\mathrm{periodic}\:\mathrm{function},\:\mathrm{with} \\ $$$$\mathrm{period}\:{T},\:\mathrm{then} \\ $$
Commented by jagoll last updated on 12/Apr/20
$${then}\:\underset{\mathrm{0}} {\overset{{nT}} {\int}}\:{f}\left({x}+{mT}\right)\:{dx}\:=\:{n}\:\underset{\mathrm{0}} {\overset{{T}} {\int}}{f}\left({x}\right)\:{dx} \\ $$
Commented by jagoll last updated on 12/Apr/20
$${yes}\:{sir}.\:{i}\:{forgot}\: \\ $$