Concept explainers
To find: The common ratio and the sum of the first
Answer to Problem 10CT
The sum is
Explanation of Solution
Given information:
The given sequence is
Calculation:
Calculate the difference between the first and the second terms.
Calculate the difference between the second and the third terms.
Since the difference of the successive terms is not constant, we scan say that the given sequence is not arithmetic.
Calculate the ratio of the first and the second terms.
Calculate the ratio of the second and the third terms.
Since the ratio of the successive terms is a constant, we can say that the given sequence is with common ratio
Substitute the values in above formula,
Therefore, the sum is
Chapter 12 Solutions
Precalculus Enhanced with Graphing Utilities
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