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Examples 1.1.2(b):

If A = {x R : -4 < x < 3} and B = {x R : -1 < x < 7}, then find A B, A B, A \ B, and comp(A).
A B = { x R : -4 < x < 7 } A B = { x R : -1 < x < 3 } A \ B = { x R : -4 < x -1 } comp( A ) = { x R : - < x -4 } { x R : 3 x < }
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