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Set Operations and Surjective but not Injective Mappings

Let A={-1,0,1,2} , B = {-2,3,4} and C= {-2,0,1,4}. Find:

(1) (A U B) ^ C = I used ^ for "intersected with" symbol, U = union

(2) (A - B) U C =

(3) Give an example that a mapping from A to B that is surjective but not injective.

Solution Summary

Set Operations and Surjective but not Injective Mappings are investigated. The solution is detailed and well presented. The response was given a rating of "5/5" by the student who originally posted the question.

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