Question

The sets D and E are given below.

D=(-1.2.4, 5, 8)
E=(-2,2. 3, 4, 6)
Find the union of D and E.
Find the intersection of D and E.
Write your answers using set notation (in roster form).
DUI- D
DAE = D
X
Ø
Ś

Answer 1

• D∪E = {-2, -1, 2, 3, 4, 5, 6, 8}
• D∩E = {2, 4}

Explanation:

You want the union and the intersection of the given sets D and E.

Union

The union of the two sets is the list of elements in either set. It will contain all of the elements of D along with all of the elements of E, with duplicate values removed so that each element is only listed once.

• D∪E = {-2, -1, 2, 3, 4, 5, 6, 8}

Intersection

The intersection of the two sets is the list of elements that appear in both sets. Any element that only appears in one of the sets is not part of the union.

• D∩E = {2, 4}

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