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Consider the function ƒ(x) { x + 5/x - 2  if x ≠ 2, f(x) =1 if x = 2.Then f (f (x)) is discontinuous

(A)  at all real numbers

(B)  at exactly two values of x

(C)  at exactly one value of x

(D)  at exactly three values of x 

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Best answer

Correct option   (B) at exactly two values of x 

Explanation:

discontinuous at x = 2

At  x = 9 it is discontinuous 

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