For each of the following state the type of f ie if it is a

For each of the following, state the type of f (i.e., if it is a function of type one-toone but not onto, onto but not one-to-one, one-to-one and onto, neither one-to-one nor onto), or whether f is even a function. No justification is required.

Solution

1)

onto but not one to one

2)

neither one-to-one nor onto

3)

one-to-one and onto

4)

onto not not one -to -one