Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN: 9781285741550
Author: James Stewart
Publisher: Cengage Learning
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### Question 3: Series Analysis

Use the following information to answer questions 3a, 3b, 3c, and 3d:

#### Given Series:
\[
\sum_{n=1}^{\infty} \frac{n^2}{n^2 + 1}
\]

**3a) Test the series using the Divergence Test. What can you conclude?**

**3b)**
**Show that:**

\[
f(x) = \frac{x^2}{x^2 + 1}
\]

Is decreasing on some interval that goes to infinity.

**3c) Use the integral test to determine if the series is divergent or convergent.**

**3d) Use a comparison test to determine if the series is divergent or convergent.**

---

In this problem, the goal is to analyze the convergence or divergence of the given series using various tests, including the Divergence Test, the Integral Test, and a Comparison Test. Each test will provide different insights into the behavior of the series as \(n\) approaches infinity.
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Transcribed Image Text:### Question 3: Series Analysis Use the following information to answer questions 3a, 3b, 3c, and 3d: #### Given Series: \[ \sum_{n=1}^{\infty} \frac{n^2}{n^2 + 1} \] **3a) Test the series using the Divergence Test. What can you conclude?** **3b)** **Show that:** \[ f(x) = \frac{x^2}{x^2 + 1} \] Is decreasing on some interval that goes to infinity. **3c) Use the integral test to determine if the series is divergent or convergent.** **3d) Use a comparison test to determine if the series is divergent or convergent.** --- In this problem, the goal is to analyze the convergence or divergence of the given series using various tests, including the Divergence Test, the Integral Test, and a Comparison Test. Each test will provide different insights into the behavior of the series as \(n\) approaches infinity.
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