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How do I draw this graph? Eg. $\cos\pi$ starts at y=1, flows down to x=$\pi$ as the mid point where y=-1 and goes back to y=1.

I'm not sure how to decipher the $2\pi10t$ here and put them into figures in a graph.

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    Do you know how to graph $y=\cos x$? Do you know how to turn a graph of $y=f(x)$ into a graph of $y=f(ax)$ by stretching/shrinking? Can you tell what the period of $\cos(2\pi\cdot10 t)$ is?2012-05-07
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    Somebody should probably mention that $\cos2\pi10t$ is an extremely fishy way of denoting $\cos(20\pi t)$, hence this interpretation (which I share) must be checked by the OP.2012-05-07
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    @anon Not sure about y=$cosx$. I know $y=f(x)$ and $y=f(ax)$. Period of $cos 2\pi10t$ is 1/10 as given by Henry below?2012-05-08

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