Thursday
December 18, 2014

Homework Help: trig function

Posted by Kjd on Thursday, May 17, 2012 at 7:10pm.

Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Please help, thank you!

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