Master Graphing Cosine with a change in the Period

The video tutorial explains how to graph the cosine function when there are changes in the period and amplitude. It covers two examples: y = cos(2x) and y = 1/2 cos(π/3 x). The tutorial details the process of identifying amplitude and period, and how to adjust the graph accordingly. It also explains the importance of critical points and how to scale the graph. The video concludes with a demonstration of graphing two periods of the cosine function with different parameters.

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