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11-04-2014
Mathematics

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The period of 3cosx/5 is..???

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Аноним Аноним

11-04-2014

[tex]the\ period\ of\ cosx\ is\ 2\pi\\\\the\ period\ of\ 3cosx\ is\ 2\pi\\\\the\ period\ of\ 3cos\frac{x}{5}\ is\ 5\cdot2\pi=10\pi[/tex]

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