Find the sum to infinity of the series 1 + 12 + 14 + ...
Question
Find the sum to infinity of the series 1 + 12 + 14 + ...
Solution
The series you've given is a geometric series. A geometric series is a series of numbers where each term after the first is found by multiplying the previous term by a fixed, non-zero number called the ratio.
The formula to find the sum to infinity of a geometric series is S = a / (1 - r), where 'a' is the first term and 'r' is the ratio.
However, for the sum to infinity to exist, the absolute value of 'r' must be less than 1. If 'r' is greater than or equal to 1, the sum to infinity does not exist because the terms of the series keep getting larger and larger.
In your series, the first term 'a' is 1 and the ratio 'r' can be found by dividing the second term by the first term, which is 12 / 1 = 12.
Since the ratio 'r' is greater than 1, the sum to infinity of this series does not exist.
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