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In which one of the following interva...

In which one of the following intervals Rolles theorem hold(s) good for `y=x^2sin1/x+x^3cos1/(2x)dot` `[1/pi,2/pi]` (b) `[1/(3pi),1/pi]` `[1/(2pi),1/pi]` (d) `[1/pi,3/pi]`

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