Mark the correct alternative in the following: The function f(x) = cos –1 x + x increases in the interval.

Question

Philoid · Accepted 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) = cos^–1 x + x

Now

f^’(x)>0

xR

x(–∞, ∞)

Mark the correct alternative in the following:The function f(x) = cos–1 x + x increases in the interval.

Mark the correct alternative in the following:
The function f(x) = cos^–1 x + x increases in the interval.