Determine whether each of these functions from Z to Z is one-to-one.
a) f (n) = n − 1
b) f (n) = n² + 1 c) f (n) = n³ d) f (n) = [n/2]
Determine whether each of these functions from Z to Z is one-to-one.
a) f (n) = n − 1
b) f (n) = n² + 1 c) f (n) = n³ d) f (n) = [n/2]