Question

27, Let f: R → R be a function such that x<0 then f(x) ≠ 0. Which of the following condition is sufficient so that f(x) = 0 can be true?

A. X>0

B. X<0

C. X=0

D. None of the above

Answer 1

None of the above option can be true Using the Mean Value Theorem, the differentiation is likely to be true that is f’(x)= 0