The values of is 2 and r are -1 of the geometric series and it can be determined by using geometric summation operation.
Given that,
The geometric series is,
2 – 2 + 2 – 2 + 2
We have to determine
What are the values of a1 and r of the geometric series?
According to the question,
<h2>Geometric series;</h2>2 – 2 + 2 – 2 + 2
The geometric series is the first term of the geometric sequence and r is the common ratio of the geometric series.
The first term of the given geometric series is 2.
And the common difference in the given geometric series is,
Where is the first term of the geometric sequence and
is the second term of the geometric sequence.
Then,
The common difference in the given geometric series is,
The common ratio in the given geometric series is -1.
Hence, the values of is 2 and r is -1 of the geometric series
For more details about Geometric progression refer to the link given below.