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![Sketch the graph of the given equation over the interval \( [-2 \pi, 2 \pi] \).
\[
y=\frac{1}{2} \cos 2 x
\]](https://media.cheggcdn.com/study/d3e/d3e85ae5-92c0-4761-a8e0-6cdb6cd0bbf7/image)
Expert Answer
The given function is y=12cos?2x Now consider the points ?2