Chapter 13.7, Problem 3MRE

To determine

To graph: The given function.

Answer to Problem 3MRE

The graph of the given function is shown in Figure 1.

Explanation of Solution

Given:

The given function is,

  $y=3\cos \pi x$

Calculation:

Plot the given function,

  

Figure 1

The amplitude is 3.

Calculate the time period,

  $\begin{array}{c}\text{Period}=\frac{2\pi }{\pi }\\ =2\end{array}$

Thus, the graph of the given function is shown in Figure 1.