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The constant 'c' of Lagrange's mean valu...

The constant 'c' of Lagrange's mean value theorem of the function `f(x)=(2x+3)/(4x-1)` defined on [1,2] is

A

`(1+sqrt15)/3`

B

`(1+sqrt21)/4`

C

`5/3`

D

`3/2`

Text Solution

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The correct Answer is:
B
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