Would someone please help me with the answer to this question please: (it is a prep question for the qualifier and taken from an old exam) Assume a function f: A->B and sets A1, A2 A, for which f(A1 A2) f(A1) f(A2). Demonstrate this inequality.
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Originally Posted by itpro Assume a function f: A->B and sets A1, A2 A, for which f(A1 A2) f(A1) f(A2). Demonstrate this inequality. then .
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