Determine whether each of the following series converges or diverges. If the series converges, give its sum. Give complete and careful proofs of your answers. Se if1sks 10 10 ifk> 10. a, where a (Be clear about the sequence of partial sums.)
Determine whether each of the following series converges or diverges. If the series converges, give its sum. Give complete and careful proofs of your answers. Se if1sks 10 10 ifk> 10. a, where a (Be clear about the sequence of partial sums.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Looking for an in depth proof to this problem if possible. Must be clear with partial sums
![### Series Convergence or Divergence Analysis
Determine whether each of the following series converges or diverges. If the series converges, give its sum. Provide complete and careful proofs of your answers.
\[
\sum_{k=1}^{\infty} a_k, \text{ where } a_k =
\begin{cases}
k^2 & \text{if } 1 \leq k \leq 10 \\
0 & \text{if } k > 10
\end{cases}
\]
(Be clear about the sequence of partial sums.)
### Explanation:
To analyze the convergence or divergence of the given series, we consider the definition of \(a_k\) provided.
1. For \(1 \leq k \leq 10\):
\[
a_k = k^2
\]
2. For \(k > 10\):
\[
a_k = 0
\]
### Sequence of Partial Sums:
To find the partial sums \(S_n\) of the series, sum the terms from \(k=1\) to \(k=n\):
\[
S_n = \sum_{k=1}^{n} a_k
\]
Given \(a_k\) is non-zero only for \(1 \leq k \leq 10\), the partial sum for \(n \geq 10\) becomes:
\[
S_n = \sum_{k=1}^{10} k^2
\]
Calculating the sum for \(k\) from 1 to 10:
- When \(k = 1\): \(1^2 = 1\)
- When \(k = 2\): \(2^2 = 4\)
- When \(k = 3\): \(3^2 = 9\)
- When \(k = 4\): \(4^2 = 16\)
- When \(k = 5\): \(5^2 = 25\)
- When \(k = 6\): \(6^2 = 36\)
- When \(k = 7\): \(7^2 = 49\)
- When \(k = 8\): \(8^2 = 64\)
- When \(k = 9\): \(9^2 = 81\)
- When \(k =](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F87a5eb21-df18-43d0-b53f-a372e6adca02%2Fad43923e-0695-4db8-a536-6d84bba92fc9%2Fpev523_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Series Convergence or Divergence Analysis
Determine whether each of the following series converges or diverges. If the series converges, give its sum. Provide complete and careful proofs of your answers.
\[
\sum_{k=1}^{\infty} a_k, \text{ where } a_k =
\begin{cases}
k^2 & \text{if } 1 \leq k \leq 10 \\
0 & \text{if } k > 10
\end{cases}
\]
(Be clear about the sequence of partial sums.)
### Explanation:
To analyze the convergence or divergence of the given series, we consider the definition of \(a_k\) provided.
1. For \(1 \leq k \leq 10\):
\[
a_k = k^2
\]
2. For \(k > 10\):
\[
a_k = 0
\]
### Sequence of Partial Sums:
To find the partial sums \(S_n\) of the series, sum the terms from \(k=1\) to \(k=n\):
\[
S_n = \sum_{k=1}^{n} a_k
\]
Given \(a_k\) is non-zero only for \(1 \leq k \leq 10\), the partial sum for \(n \geq 10\) becomes:
\[
S_n = \sum_{k=1}^{10} k^2
\]
Calculating the sum for \(k\) from 1 to 10:
- When \(k = 1\): \(1^2 = 1\)
- When \(k = 2\): \(2^2 = 4\)
- When \(k = 3\): \(3^2 = 9\)
- When \(k = 4\): \(4^2 = 16\)
- When \(k = 5\): \(5^2 = 25\)
- When \(k = 6\): \(6^2 = 36\)
- When \(k = 7\): \(7^2 = 49\)
- When \(k = 8\): \(8^2 = 64\)
- When \(k = 9\): \(9^2 = 81\)
- When \(k =
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