Question Number 137697 by Mathspace last updated on 05/Apr/21
$${let}\:{f}\left({x}\right)={x}^{\mathrm{2}} +\mathrm{2}{x}−\mathrm{1} \\ $$$${find}\:\:\int\:\frac{{f}\left({x}\right)}{{f}^{−\mathrm{1}} \left({x}\right)}{dx}\:{and}\:\int\:\frac{{f}^{−\mathrm{1}} \left({x}\right)}{{f}\left({x}\right)}{dx} \\ $$
Commented by TheSupreme last updated on 07/Apr/21
$${f}^{−\mathrm{1}} \left({x}\right)\:{is}\:{not}\:{a}\:{function} \\ $$