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Application of Derivatives

Section: Mathematics

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Question : 9

Total: 32

If f(x)=|

cos(2x)	cos(2x)	sin(2x)
−cosx	cosx	−sinx
sinx	sinx	cosx

[JEE Adv 2017 P2]

f′(x)=0 at exactly three points in (−π,π)
f′(x)=0 at more than three points in (−π,π)
f(x) attains its maximum at x=0
f(x) attains its minimum at x=0

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