Consider the geometric series (x – 7)". For which r-values does the series converge? I is in (Enter your answer using interval notation.) For the r-values you found above, what is the sum of the series? 00 (x – 7)" = n-0

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### Geometric Series Convergence and Sum

---

**Problem Statement:**

Consider the geometric series

\[
\sum_{n=0}^{\infty} \left( -\frac{1}{8} \right)^n (x - 7)^n.
\]

1. **For which \( x \)-values does the series converge?**

   * \( x \) is in [_____] (Enter your answer using [interval notation](https://en.wikipedia.org/wiki/Interval_(mathematics)).

2. **For the \( x \)-values you found above, what is the sum of the series?**

   \[
   \sum_{n=0}^{\infty} \left( -\frac{1}{8} \right)^n (x - 7)^n = [_____] 
   \]

---

**Instructions:**

- Identify the values of \( x \) for which the given series converges by using appropriate methods for determining the radius and interval of convergence for geometric series.
- Find the closed-form expression for the sum of the series for those \( x \)-values within the interval of convergence.

**Note:** The notation \(\sum_{n=0}^{\infty}\) represents an infinite sum starting from \( n = 0 \) to \( n = \infty \). The interval notation of the form [a, b) indicates an interval that is closed on the left and open on the right.

---

**Additional Help:**

For detailed steps on determining the interval of convergence and calculating the sum of geometric series, refer to resources on [Geometric Series](https://en.wikipedia.org/wiki/Geometric_series) and [Series Convergence](https://en.wikipedia.org/wiki/Convergent_series).
Transcribed Image Text:### Geometric Series Convergence and Sum --- **Problem Statement:** Consider the geometric series \[ \sum_{n=0}^{\infty} \left( -\frac{1}{8} \right)^n (x - 7)^n. \] 1. **For which \( x \)-values does the series converge?** * \( x \) is in [_____] (Enter your answer using [interval notation](https://en.wikipedia.org/wiki/Interval_(mathematics)). 2. **For the \( x \)-values you found above, what is the sum of the series?** \[ \sum_{n=0}^{\infty} \left( -\frac{1}{8} \right)^n (x - 7)^n = [_____] \] --- **Instructions:** - Identify the values of \( x \) for which the given series converges by using appropriate methods for determining the radius and interval of convergence for geometric series. - Find the closed-form expression for the sum of the series for those \( x \)-values within the interval of convergence. **Note:** The notation \(\sum_{n=0}^{\infty}\) represents an infinite sum starting from \( n = 0 \) to \( n = \infty \). The interval notation of the form [a, b) indicates an interval that is closed on the left and open on the right. --- **Additional Help:** For detailed steps on determining the interval of convergence and calculating the sum of geometric series, refer to resources on [Geometric Series](https://en.wikipedia.org/wiki/Geometric_series) and [Series Convergence](https://en.wikipedia.org/wiki/Convergent_series).
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