College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 9 - Section 9.1 - Sequences - 9.1 Assess Your Understanding: 44

Answer

The first five terms are: $a_1= -1$ $a_2 = 1$ $a_3 = 2$ $a_4 = 9$ $a_5= 47$

Work Step by Step

Use the given recursive formula to find the next four terms: $a_1= -1$ $a_2 = 1$ $a_3 = a_1 +3a_2=-1+3(1) = -1 + 3 =2$ $a_4 = a_2 + 4a_3 =1 + 4(2) = 1+8 = 9$ $a_5= a_3 + 5a_4 = 2+5(9) = 2+45=47$
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