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If a particle moves is a straight line a...

If a particle moves is a straight line according to `s=t^(3)-6t^(2)-15t`, the time interval during which the velocity is negative and acceleration is positive is

A

`2lttlt5`

B

`2letle5`

C

`tge2`

D

`tle2`

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SURA PUBLICATION-APPLICATIONS OF DIFFERENTIAL CALCULUS-ADDITIONAL QUESTIONS
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