Which one of the following function is not invertible?
A. f : R → R, f(x) = 3x + 1
B. f : R → [0, ∞), f(x) = x2
C. f : R+ → R+, f(x) =
D. None of these
Answer:D
Which one of the following function is not invertible?
A. f : R → R, f(x) = 3x + 1 B. f : R → [0, ∞), f(x) = x2 C. f : R+ → R+, f(x) = D. None of these