Homework 3
1. Determine whether each of the following functions is 1-to-1 and whether it is onto.
Assume the domain and co-domain is
Z
, the integers. Explain your answers.
i.
f
(
n
) =
n
/ 2, assuming integer division
4

2. Given each of the following functions that maps
X
= {1, 2, 3} to
Y
= {
A
,
B
,
C
}
A
A