Question

1. Graph the function f(x)=4cos(x). (Be sure to label your x-axis.)

Answer 1

ANSWER

To graph the function

$y=4cos(x)$ we need to plot some few points within one period. Since the interval is not given, we shall use $[0,2 \pi]$'

$\left \begin{array}{cc}x&y=4cos(x)\\0 &4\\\frac{\pi}{2}&0 \\ \pi&-4\\\frac{3\pi}{2} &0\\2\pi&4\end{array}\right$.

We plot the above points to obtain the graph as shown in the attachment.