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Question Number 191946 by mustafazaheen last updated on 04/May/23

$$\frac{{\mathrm{fof}}^{-1}\left(5\right)+{\mathrm{fof}}^{-1}\left(15\right)}{{\mathrm{fof}}^{-1}\left(5\right)}=?$$

Answered by horsebrand11 last updated on 04/May/23

$$=4$$

Commented by mustafazaheen last updated on 04/May/23

$$\mathrm{how}\mathrm{is}\mathrm{solution}$$

Commented by JDamian last updated on 04/May/23

$$\mathrm{hint}:f\circ f^{-1}=x$$

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