(Inn) 3. n' 3 n=1
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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![This is a mathematical expression representing an infinite series. The series is presented as:
\[
3. \quad \sum_{n=1}^{\infty} \frac{(\ln n)^2}{n^3}
\]
### Explanation:
- **Summation Notation (\(\sum\)):** This symbol indicates that you are summing a sequence of terms. The index \(n\) starts at 1 and goes to infinity (\(\infty\)).
- **Expression (\(\frac{(\ln n)^2}{n^3}\)):**
- \(\ln n\) refers to the natural logarithm of \(n\).
- \((\ln n)^2\) means that this logarithm is squared.
- This squared logarithm term is divided by \(n^3\).
The series is asking you to sum all terms of this form starting from \(n = 1\) up to infinity. Each term becomes progressively smaller as \(n\) increases, due to the division by \(n^3\). This is a typical expression you'd encounter in advanced calculus or analysis when studying convergence of series.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c5b9d02-3298-4093-b958-581b794ba948%2F3bf96731-f63c-4453-936b-5910f8997287%2Fbgdl5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:This is a mathematical expression representing an infinite series. The series is presented as:
\[
3. \quad \sum_{n=1}^{\infty} \frac{(\ln n)^2}{n^3}
\]
### Explanation:
- **Summation Notation (\(\sum\)):** This symbol indicates that you are summing a sequence of terms. The index \(n\) starts at 1 and goes to infinity (\(\infty\)).
- **Expression (\(\frac{(\ln n)^2}{n^3}\)):**
- \(\ln n\) refers to the natural logarithm of \(n\).
- \((\ln n)^2\) means that this logarithm is squared.
- This squared logarithm term is divided by \(n^3\).
The series is asking you to sum all terms of this form starting from \(n = 1\) up to infinity. Each term becomes progressively smaller as \(n\) increases, due to the division by \(n^3\). This is a typical expression you'd encounter in advanced calculus or analysis when studying convergence of series.
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