Sets A and J are defined as follows.
A={-2, 2, 4, 7, 8}
J={-1, 1, 4, 5, 7}
Answer each part below. Write your answer in roster form or as Ø.
(a) Find the intersection of A and J.
AnJ=0
(b) Find the union of A and J.
AUJ=
...
X
0,0...
Ś