The done$-$response for a specific ding is $f(x)=\frac{100x^2}{x^{2}0\mathrm{.}29},$ where $f(x)$ is the percest of relief obtained from a dose of $x$ trams of a ding, where $0x1\mathrm{.}5.$

Find $f(0\mathrm{.}5)$ and select the appropriate uniti.

$f^{\text{'}}(0\mathrm{.}6)=$

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Jad Wook