Question
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Answer
The sum of the series is
or approximately 0.142857.
Solution
To find the sum of the given series, we can use the formula for the sum of an infinite geometric series:
where:
-
is the first term of the series -
is the common ratio of the series
In this case, the first term
and the common ratio
.
Substitute these values into the formula to find the sum of the series:
Now, let’s calculate the sum.
Calculate the value by following steps:
Calculate the value by following steps:
- step0: Calculate:
- step1: Remove the parentheses:
- step2: Subtract the numbers:
- step3: Multiply by the reciprocal:
- step4: Reduce the numbers:
- step5: Multiply:
The sum of the given series isor approximately 0.142857.
Answered by UpStudy AI and reviewed by a Professional Tutor
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Beyond the Answer
This series is an example of an infinite geometric series, which is a fascinating aspect of mathematics involving patterns and summation. The first term
is
, and the common ratio
is also
. The formula for the sum
of an infinite geometric series is given by
, provided that
. Plugging in the values, we see that this series converges to
.
Now, let’s see how this can be put to use! Infinite geometric series pop up not only in math problems but also in real-life applications, such as calculating the present value of an annuity in finance. For example, if you expect to receive a fixed sum of money regularly and know the interest rate, you can use the formula for the sum of an infinite series to determine the worth of those future payments in today’s dollars. Understanding these concepts can help you make smarter financial decisions!