Question

Let F(x) =  2cos² t dt for all x ∈ R and f : [0,1/2] → [0,∞) be a be a continuous function. for a ∈ [0,1/2], if F' (a) +2 is the area of the region bounded by x=0,y 0,y= f(x) and x = a, then f(0) is

Answer 1

The correct answer is