Let $S=\{a, b, c\}$ and $T=\{1,2,3\} .$ Find $F^{-1}$ of the following functions $F$ from $S$ to $T$. if it exists. $F =\{( a , 2)\,,(b , 1),\,( c , 1)\}$

If $f(x) = {x^2} + 1$, then ${f^{ – 1}}(17)$ and ${f^{ – 1}}( – 3)$ will be

Let $f : R \rightarrow  R\ f(x) = x^3 -3x^2 + 3x\ -2$ , then $f^{-1}(x)$ is given by

If $f:IR \to IR$ is defined by $f(x) = 3x – 4$, then ${f^{ – 1}}:IR \to IR$ is

State with reason whether following functions have inverse $h:\{2,3,4,5\} \rightarrow\{7,9,11,13\}$ with $h=\{(2,7),(3,9),(4,11),(5,13)\}$