HW 3 - 1. Determine whether each of the following functions...

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.
2.
Given each of the following functions that maps X = {1, 2, 3} to Y = { A , B ,
1.
f (1) = A , f (2) = B , f (3) =
2.
g (1) = C , g (2) = B , g (3) =
Determine whether the function has an inverse. If it has an inverse,
provide it. If it does not, explain why not.
C }
A
A