Asked by BOB
simplify cox^2x-cos^4x
Answers
Answered by
Reiny
= cos^2 x(1 - cos^2 x)
= cos^2 x (sin^2 x)
= (sinxcosx)^2
= [ (1/2)sin (2x) ]^2
= (1/4) (sin^2 (2x) )
debatable whether that is more "simplified" than the original.
= cos^2 x (sin^2 x)
= (sinxcosx)^2
= [ (1/2)sin (2x) ]^2
= (1/4) (sin^2 (2x) )
debatable whether that is more "simplified" than the original.
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