Problem

Determine the convergence of the given series:
$\sum_{n=1}^{\infty} \frac{1}{2^{2 n+4}}$

Answer

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Answer

\(\boxed{\frac{1}{24}}\) is the sum of the series.

Steps

Step 1 :Recognize that this is a geometric series with common ratio \(\frac{1}{4}\), which is less than 1. Therefore, the series converges.

Step 2 :Use the formula for the sum of an infinite geometric series, which is \(\frac{a}{1-r}\), where \(a\) is the first term and \(r\) is the common ratio.

Step 3 :In this case, the first term \(a\) is \(\frac{1}{2^{2*1+4}} = \frac{1}{32}\) and the common ratio \(r\) is \(\frac{1}{4}\).

Step 4 :Substitute \(a\) and \(r\) into the formula to get the sum of the series: \(\frac{\frac{1}{32}}{1-\frac{1}{4}} = \frac{1}{24}\).

Step 5 :\(\boxed{\frac{1}{24}}\) is the sum of the series.

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