Question Number 191946 by mustafazaheen last updated on 04/May/23
$$\frac{\mathrm{fof}^{−\mathrm{1}} \left(\mathrm{5}\right)+\mathrm{fof}^{−\mathrm{1}} \left(\mathrm{15}\right)}{\mathrm{fof}^{−\mathrm{1}} \left(\mathrm{5}\right)}=? \\ $$
Answered by horsebrand11 last updated on 04/May/23
$$=\:\mathrm{4} \\ $$
Commented by mustafazaheen last updated on 04/May/23
$$\mathrm{how}\:\mathrm{is}\:\mathrm{solution} \\ $$
Commented by JDamian last updated on 04/May/23
$$\mathrm{hint}:\:{f}\:\circ{f}^{−\mathrm{1}} \:=\:{x} \\ $$