(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Suppose f: A → B and that E,F are subsets of A.

Prove the following:

a) [itex] f(E \cup F) \equiv f(E) \cup f(F) [/itex]

b) [itex] f(E \cap F) \subset f(E)\cap f(F) [/itex]

2. Relevant equations

3. The attempt at a solution

So far I have solved the first one, but I am having trouble with the second. I have no idea where to begin.

BiP

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# Homework Help: Union/Intersection Proof

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