Question: Graph the function f(x) = cos^2(x) - sin^2 (x) over the interval [-2 pi, 2 pi]. Use 100 points in the domain. Does the graph

Graph the function f(x) = cos^2(x) - sin^2 (x) over the interval [-2 pi, 2 pi]. Use 100 points in the domain. Does the graph resemble any graph that you are familiar with? Circle one: cos(2x) cos(x/2) cos(x)
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