To sketch: The function by hand without plotting any points and then graph of the function .
The standard graph of the function is roughly drawn as shown below in Figure 1.
Then, draw the graph of , stretch the graph horizontally by a factor of 2. Thus, the graph of is shown below in Figure 2.
Observe that Figure 2is obtainedfrom Figure 1 in such a way that it is stretchedhorizontally by a factor of 2.
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