Which of the following function f: Z X Z → Z is not onto?
A. f(a, b) = a + b
B. f(a, B. = a
C. f(a, b) = |b|
D. f(a, b) = a – b
Answer:A
Which of the following function f: Z X Z → Z is not onto?
A. f(a, b) = a + b B. f(a, B. = a C. f(a, b) = |b| D. f(a, b) = a – b
Explanation: The function is not onto as f(a)≠b.