Question
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Ask by Johnston Fitzgerald. in Pakistan
Mar 13,2025

Upstudy AI Solution

Tutor-Verified Answer

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:
  • 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 is or approximately 0.142857.

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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!

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