Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 5 - Sequences, Mathematical Induction, and Recursion - Exercise Set 5.6 - Page 302: 1

Answer

$a_{2}$=4 $a_{3}$=11 $a_{4}$=26

Work Step by Step

$a_{2}$=2$a_{2-1}$+2 = 2.$a_{1}$+2 = 2.1+2 = 4 $a_{3}$=2$a_{3-1}$+3 = 2.$a_{2}$+3 = 2.4+3 = 11 $a_{4}$ =2$a_{4-1}$ +4 = 2.$a_{3}$+4 = 2.11+4 =26
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