Mark the correct alternative in the following:

f(x) = 2x – tan^{–1} x – logis monotonically increasing when

Formula:- (i) 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:-

For increasing function f’(x)>0

x ϵ R

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