trig
posted by Anonymous .
prove that (sin^4xcos^4x)/(sinxcosx) = sinx+cosx

trig 
MathMate
(sin^4xcos^4x)/(sinxcosx)
=(sin^2x+cos^2x)(sin^2xcos^2x)/(sinxcosx)
=1*(sinx+cosx)(sinxcosx)/(sinxcosx)
=sinx+cosx
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