
In Problems 3-14, find the amplitude, period, and phase shift of each function. Graph each function. Be sure to label key points. Show at least two periods.

To find: The amplitude, period, phase shift of the function, graph the function.
Answer to Problem 5AYU
Solution:
The amplitude , period , phase shift .
Explanation of Solution
Given:
Calculation:
Compare to , note that and . The graph is a cosine curve with amplitude , period and phase shift .
The graph of will lie between and 2 on the .
One cycle will begin at and end at .
To find five key points, divide the interval in to four sub intervals, each of length .
Use the values of to determine the five key points on the graph:
Plot these five points and fill in the graph of the sine function.
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