Question

12
Determine whether each of these functions from (a, b, c, d) to itself is onto.
a) f(a)=b, f(b) –a, f(c) = c, f(d) = d.
b) f(a)b, f(b) = b, f(c) = d, f(d) - C.
c) f(a) = d.(b) - b, f(c) -c, f(d)=d.​

Answer 1

Answer:

may be the answer is c) option

Step-by-step explanation:

hope it will help you

Answer 2

Answer:

The anawer is a) option

As every elaments im the domain has its preimage.