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" (1) "(sin x-sin3x)/(sin^(2)x-cos^(2)x)...

" (1) "(sin x-sin3x)/(sin^(2)x-cos^(2)x)=2sin x

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(sin x - sin 3x)/(sin^(2)x-cos^(2)x)=2sinx

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Prove that (sin x-sin 3 x)/(sin ^(2) x-cos ^(2) x)=2 sin x

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If f(x) = |(1+sin^(2)x,cos^(2)x,4 sin 2x),(sin^(2)x,1+cos^(2)x,4 sin 2x),(sin^(2)x,cos^(2)x,1+4 sin 2x)| What is the maximum value of f(x)?