A function is said to be ______________, if and only if f(a) = f(b) implies that a = b for all a and b in the domain of f.
A. One-to-many
B. One-to-one
C. Many-to-many
D. Many-to-one
Answer:A
A function is said to be ______________, if and only if f(a) = f(b) implies that a = b for all a and b in the domain of f.
A. One-to-many B. One-to-one C. Many-to-many D. Many-to-one
Explanation: A function is one-to-one if and only if f(a)≠f(b) whenever a≠b.