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2. Define two relations on R: R1 = {(x, y) : x 2 + y 2 4} R2 = {(x, y) : x = y}
2. Define two relations on R: R1 = {(x, y) : x 2 + y 2 4} R2 = {(x, y) : x = y} Graph R1, R2, R1 R2, and R1 R2 in the Cartesian plane.
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Logics For Databases And Information Systems
Authors: Jan Chomicki ,Gunter Saake
1st Edition
1461375827, 978-1461375821
