Q. 35.0( 1 Vote )

Mark the correct A. (0, e)

B. (0, 1)

C. (0, 1/e)

D. (1/e, e)

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) = xx



now for decreasing


f(x)<0


xx(1+logx)<0


(1+logx)<0


logx<-1


x<e-1


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