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What is the period of the graph of the equation y=3cos2x
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What is the period of the graph of the equation y=3cos2x

User Oxdeadbeef
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the\ period\ cosx\ is\ 2\pi\\\\the\ period\ 3cosx\ is\ 2\pi\\\\the\ period\ 3cos2x\ is\ 2\pi:2=\pi\leftarrow Answer
User Yorjo
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