1. Let X = {1,2,3} and let R = {(1, 3)(1,2),(2, 3)}. Find the domain and range ofR. 2. Let R be a relation from A to B. Prove that (a) domR = ranR-l and (b) rạnR = domR- %3D

Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Functions
Section8.1: Concept Of A Function
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1. Let X = {1,2,3} and let R = {(1, 3L(1,2),(2, 3)}. Find the domain and range ofR.
2. Let R be a relation from A to B. Prove that
(a) domR = ranR-l and
(b) rạnR = domR-1
Transcribed Image Text:1. Let X = {1,2,3} and let R = {(1, 3L(1,2),(2, 3)}. Find the domain and range ofR. 2. Let R be a relation from A to B. Prove that (a) domR = ranR-l and (b) rạnR = domR-1
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