Show that the following conditions are equivalent:
(a) A is a subset of B.
(b) A intersection B = A
(c) A - B = phai
(d) A union B = B
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if A is a subset of B , then all the elements which are in A , is in B also, so A-B=phai
so, all the element of A is in B, so A intersection B =A
and since all elements of A is in B , A union B=B
I hope this will help you
if not then comment me
so, all the element of A is in B, so A intersection B =A
and since all elements of A is in B , A union B=B
I hope this will help you
if not then comment me
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