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Prove that: (cos5x+cos4x)/(1-2cos3x)=-co...

Prove that: `(cos5x+cos4x)/(1-2cos3x)=-cos2x-cos x`

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int(cos5x+cos4x)/(1-2cos3x)dx

int(cos5x+cos4x)/(1-2cos3x)dx

int (cos 5x + cos 4x)/(1-2cos3x) dx

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Evaluate: int(cos5x+cos4x)/(1-2cos3x)dx

Evaluate: int(cos5x+cos4x)/(1-2cos3x)dx