Test the series below for convergence using the Root Test. ( 2n +5 3n+3 The limit of the root test simplifies to lim f(n)| where 72-00 f(n) = The limit is: (enter oo for infinity if needed) Based on this, the series

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
### Series Convergence Analysis Using the Root Test

#### Problem 1: Root Test for Series Convergence

Test the series below for convergence using the Root Test:
$$\sum_{n=1}^{\infty} \left(\frac{2n + 5}{3n + 3}\right)^n$$

The limit of the root test simplifies to:
$$\lim_{n \to \infty} |f(n)|$$
where 
$$f(n) =$$ [Input Required]

The limit is:
$$\lim_{n \to \infty} |f(n)| =$$ [Input Required]

Based on this, the series:
- Ⓐ Converges
- Ⓑ Diverges

---

#### Problem 2: Radius of Convergence of a Series

Find all the values of \( x \) such that the given series would converge:
$$\sum_{n=1}^{\infty} \frac{(-1)^n \cdot 7^n \cdot x^n}{\sqrt{n} + 3}$$

Determine the interval of convergence:

- The series is convergent from \( x = \) [Input Required], with the left end included (enter Y or N): [Input Required]
- The series is convergent to \( x = \) [Input Required], with the right end included (enter Y or N): [Y]

This content aims to help students understand the application of the Root Test and finding the interval of convergence for series in Calculus. Through completing these exercises, students can gain a firmer grasp of determining series behavior and addressing complex calculus problems.
Transcribed Image Text:### Series Convergence Analysis Using the Root Test #### Problem 1: Root Test for Series Convergence Test the series below for convergence using the Root Test: $$\sum_{n=1}^{\infty} \left(\frac{2n + 5}{3n + 3}\right)^n$$ The limit of the root test simplifies to: $$\lim_{n \to \infty} |f(n)|$$ where $$f(n) =$$ [Input Required] The limit is: $$\lim_{n \to \infty} |f(n)| =$$ [Input Required] Based on this, the series: - Ⓐ Converges - Ⓑ Diverges --- #### Problem 2: Radius of Convergence of a Series Find all the values of \( x \) such that the given series would converge: $$\sum_{n=1}^{\infty} \frac{(-1)^n \cdot 7^n \cdot x^n}{\sqrt{n} + 3}$$ Determine the interval of convergence: - The series is convergent from \( x = \) [Input Required], with the left end included (enter Y or N): [Input Required] - The series is convergent to \( x = \) [Input Required], with the right end included (enter Y or N): [Y] This content aims to help students understand the application of the Root Test and finding the interval of convergence for series in Calculus. Through completing these exercises, students can gain a firmer grasp of determining series behavior and addressing complex calculus problems.
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