1.

From mean value theorem, f(b)-f(a) = (b-a)f^(1)(x_(1)), a lt x_(1) lt b if f(x) = ( 1)/( x) then x_(1) =

Answer»

`SQRT(AB)`
`(a+b)/(2)`
`(ab)/(a+b)`
`(b-a)/(b-a)`

ANSWER :A


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