Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - Review Exercises - Page 841: 42


It is not a geometric sequence.

Work Step by Step

A sequence is geometric if $\frac{a_2}{a_1}=\frac{a_3}{a_2}=\frac{a_4}{a_3}=...=r$ For the given sequence we have that: $\frac{a_2}{a_1}=\frac{\frac{2}{5}}{\frac{1}{4}}=\frac{2}{5}\frac{4}{1}=\frac{8}{5}$ $\frac{a_3}{a_2}=\frac{\frac{3}{6}}{\frac{2}{5}}=\frac{3}{6}\frac{5}{2}=\frac{15}{12}=\frac{5}{4}$ It is not a geometric sequence.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.