Let $f: R^{+} \rightarrow[-5, \infty)$ be defined as $f(x)=9 x^2+6 x-5$, where $R^{+}$ is the set of all non-negative real numbers. Then, $f$ is :

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Let \(f: R^{+} \rightarrow[-5, \infty)\) be defined as \(f(x)=9 x^2+6 x-5\), where \(R^{+}\) is the set of all non-negat…