Find the common ratio for each geometric sequence.
−
2
,
4
,
−
8
,
16
,
…
Expert Solution & Answer
To determine
To find : the common ratio for the geometric sequence.
Answer to Problem 9P
−2
Explanation of Solution
Given sequence: −2,4,−8,16,.......
Calculation:
A geometric sequence is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed , non-zero number called common ratio.
Therefore, common ratio r for a geometric sequence is obtained by dividing any term in the sequence by the previous term.
The common ratio for given geometric sequence is
r=a2a1r=4−2=−2
Thus, common ratio for given geometric sequence is −2 .
Elementary and Intermediate Algebra: Concepts and Applications (7th Edition)
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