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Find the critical points of each of the ...

Find the critical points of each of the following functions :
`sin2x-x(-(pi)/(2)lexle(pi)/(2))`

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The correct Answer is:
Max at `x=-(pi)/(6)` and Min at `x=-(pi)/(6)`
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CHHAYA PUBLICATION-MAXIMA AND MINIMA -EXERCISE Short Answer Type Questions
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