Let f : N→N be a function defined as f (x)=9x2+6x-5. Show that f : N – InterviewSolution

1.	Let f : N→N be a function defined as f (x)=9x2+6x-5. Show that f : N→S, where S is the range of f, is invertible. find the inverse of f and hence find f -1(43) and f -1(163).
Answer» Let f : N $\to$ N be a function defined as f $(x) =$ 9 $x^{2} +$ 6 $x -$ 5. Show that f : N $\to$ S, where S is the range of f, is invertible. find the inverse of f and hence find f ^{$-$ 1}(43) and f ^{$-$ 1}(163).

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