Question

if a and b are subsets of the universal set u then show that A is a subset of B=A union B=b

Answer 1

Step-by-step explanation:

A⊂B ⇒ AUB =B. If A is a subset of B, then any element x of A is element of B. This also means that all elements of A are elements of AUB. ... Any element that belongs to B, also belongs the union of sets A and B.