Tuesday, May 28, 2013

rewrite this expression in terms of cos(x), and then simplify it: cos^4(x)-sin^4(x)+sin^2(x)


 


which when simplified gives us... 


%0D%0Acos%5E2%28x%29-sin%5E2%28x%29%2Bsin%5E2%28x%29=cos%5E2%28x%29%0D%0A 


:)

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