Discrete Mathematics and Its Applications, Seventh Edition

Published by McGraw-Hill Education
ISBN 10: 0073383090
ISBN 13: 978-0-07338-309-5

Chapter 2 - Section 2.2 - Set Operations - Exercises - Page 136: 27

Answer

see attached picture and for further go for step by step solution

Work Step by Step

a) In the figure we have shaded the A set with horizontal bars (including the double-shaded portion, which includes both horizontal and vertical bars), and we have shaded the set B-C with vertical bars (that portion inside B but outside C. The intersection is where these overlap-the double-shaded portion (shaped like an arrowhead). b) In the figure we have shaded the set A ∩ B with horizontal bars (including the double-shaded portion, which includes both horizontal and vertical bars), and we have shaded the set A ∩ C with vertical bars. The union is the entire region that has any shading at all (shaped like a tilted mustache). c) In the figure we have shaded the set A ∩ Bᶜ with horizontal bars (including the double-shaded portion, which includes both horizontal and vertical bars), and we have shaded the set A ∩ Cᶜ with vertical bars. The union is the entire region that has any shading at all (everything inside A except the triangular middle portion where all three sets overlap) portion (shaped like an arrowhead).
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