## Calculus 8th Edition

(a) $f^{-1}(17)=6.$ (b) $f(2)=3.$
Using the definition of the inverse function: $f(x)=y\Leftrightarrow f^{-1}(y)=x$ we get by fillng up the missing gaps: (a) $f(6)=17\Leftrightarrow f^{-1}(17)=6;$ (b) $f(2)=3\Leftrightarrow f^{-1}(3)=2.$