Question

Let f(x) -x/√a² + x² - d - x/√b² + (d - x)²,x ∈R, where a, b and d are non-zero real  constants. Then :

(1)  f' is not a continuous function of x 

(2)  f is a decreasing function of x 

(3)  f is neither increasing nor decreasing function of x 

(4)  f is an increasing function of x

Answer 1

Correct option  (4) f is an increasing function of x

Explanation:

So f(x) is an increasing function.