Q10 - If y = cos 2x then y20
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`cos 2x=2cos^2x-1` `impliescos^2x=(1+cos2x)/(2)` Differentiating both sides w.r.t. x, we get ...
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Solution: We know that `cos 2x=2cos^2x-1` `impliescos^2x=(1+cos2x)/(2)` Differentiating both ...
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