Mark the correct alternative in the following:

The interval of increase of the function f(x) = x – ex + tan is


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:-




Now


f’(x)>0


1-e


x>0


X<0


1