Chapter 1 - Review Exercises - Page 303: 73

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Now, consider the given function $g\left( x \right)=2f\left( \frac{1}{2}x \right)$. This function is of the form $g\left( x \right)=df\left( cx \right)$, where $c=\frac{1}{2}<1$ and $d=2$. Therefore, in order to draw this graph, first divide each $x\text{-}$ coordinate of $y=f\left( x \right)$ by $c$ and then multiply each $y\text{-}$ coordinate by $d$.