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

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

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To evaluate the integral \[ \int \frac{\cos 5x + \cos 4x}{1 - 2\cos 3x} \, dx, \] we will follow these steps: ...
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