Exercise 1.7.12

The solid line is \(y=x^2\) and the dashed line is \(y=\left(\dfrac{x}{\frac{1}{2}}\right)^2\).

The graph of \(y=\left(\dfrac{x}{\frac{1}{2}}\right)^2\)is half the width of \(y=x^2\).