Concept explainers
To find: The common ratio and the sum of the first
Answer to Problem 9CT
The sum of
Explanation of Solution
Given information:
The sum of the first
Calculation:
Substitute the values of
Thus,
The sequence is
Calculate the difference between successive terms.
The difference between successive terms is not constant and is
The ratio of the successive terms is
Thus, the ratio of successive terms is not constant.
Therefore, the series is arithmetic and the common difference is
Substitute the values of
Therefore, the sum of the first
Chapter 12 Solutions
Precalculus Enhanced with Graphing Utilities
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