Consider the function f:R+→[-9,∞) given by f(x)=5x2+6x-9. Prove that f is invertible with f-1(y)=54+5y-34

Consider the function f: $R^{+} \to [- 9, \infty)$ given by f(x)= $5 x^{2} + 6 x - 9$ . Prove that f is invertible with $f^{- 1} (y) = \frac{\sqrt{54 + 5 y} - 3}{4}$

Matching exercise

Match the items on the right to the items on the left.

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