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Question: 9 in bjective proof 1 prove that the set complement...

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9. In Bìjective Proof #1, prove that the set complement function is one-to-one using the property as stated in Definition 1.3.3 instead. Compare with the proof given in the text

Definition 1.3.3 (one-to-one, onto, bijection) For a function f : AB, we say f is a ection or one-to-one correspondence provided f has both of the following properties. . 0ne-to-one: For each ai , a 2 E A, if f (al) :: f(a2), then a,-a2. Onto: For each b e B, there exists some a e A such that f(a) b

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