Let A and B be sets. Show that A B if and only if A B = A.

Chapter 2, Problem 6E

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QUESTION:

Let A and B be sets. Show that A ? B if and only if A ? B = A.

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QUESTION:

Let A and B be sets. Show that A ? B if and only if A ? B = A.

ANSWER:

Solution: Step 1: Let A and B be sets.Assume A B means A is a set of another set B if all element of the set A are element of the set B

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