Q. 45.0( 1 Vote )

Mark the correct A. (1, 2)

B. (2, 3)

C. ((1, 3)

D. (2, 4)

Answer :

Formula:- The necessary and sufficient condition for differentiable function defined on (a,b) to be strictly increasing on (a,b) is that f’(x)>0 for all x(a,b)


Given:-


f(x) = 2log(x – 2) – x2 + 4x + 1



f(x)=


now for increasing


f(x)>0



3<0 and x-2>0


and x>2


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