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Question

Assertion :If Rolle's theorem be applied in f(x), then L.M.V. theorem is also applicable for f(x). Reason: Both Rolle's theorem & L.M.V. theorem can not be applied in f(x)=|sin|x|| in [π3,π3]

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion: If Rolle's theorem be applied in f(x), then L.M.V theorem is also applicable for f(x)
It is true because two conditions of Rolle's theorem namely
i) f(x) continuous in [a,b]$
ii) f(x)differentiable in (a,b)$
is also true for L.M.V theorem
Reason: f(x)=|sinx| in [π3,π3] is not continuous differentiable therefore does not follow Rolle's and L.M.V theorem
Thus, both assertion and Reason are correct but reason is not correct explanation for Assertion.

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