Find the domain and range of the following functions a The f

Find the domain and range of the following functions:

a.) The function that assigns to each non-negative integer its last digit

Domain:

Range:

Domain:

Range:

Solution

(a)
Domain: 0 U I+ {set of all non-negative integers}
Range: {0, 1, 2, 3, 4, 5, 6, 7, 8 9}

(b)
Domain: R {set of all real numbers}
Range: (0, 1]