Proceed as in Example 3 in Section 6.1 to rewrite the given expression using a single power series whose general term involves xx. 00 00 2+ Σ n(n-1) cx- Σ. n = 2 n=0 00 + k = 2 X X )
Proceed as in Example 3 in Section 6.1 to rewrite the given expression using a single power series whose general term involves xx. 00 00 2+ Σ n(n-1) cx- Σ. n = 2 n=0 00 + k = 2 X X )
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Proceed as in Example 3 in Section 6.1 to rewrite the given expression using a single power series whose general term involves xk.
![***Understanding a Power Series Expression***
In this section, we'll explore how to rewrite a given expression using a single power series, focusing on expressions whose general term involves \( x^k \).
Consider the following expression:
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} + \sum_{n=0}^{\infty} c_n x^{n+2} \]
Our goal is to express this combined series as a single power series involving \( x^k \).
To do so, we'll proceed similarly to the method outlined in Example 3 in Section 6.1.
Here is the given expression:
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} + \sum_{n=0}^{\infty} c_n x^{n+2} \]
### Breakdown of the Steps:
1. **Identify and Rewrite Each Sum:**
- For the first summation: \( \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} \):
- Notice that the power of \( x \) is \( n-2 \). We can let \( k = n-2 \) which implies \( n = k+2 \).
- Substitute \( n \) with \( k+2 \) in the first sum, and accordingly adjust the limits of summation from \( n=2 \) to \( \infty \):
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} = \sum_{k=0}^{\infty} (k+2)(k+1)c_{k+2} x^k \]
- For the second summation: \( \sum_{n=0}^{\infty} c_n x^{n+2} \):
- Notice that the power of \( x \) is \( n+2 \). We can let \( k = n+2 \) which implies \( n = k-2 \).
- Substitute \( n \) with \( k-2 \) (but keep in mind the negative indices should adjust the lower limit to match \( \sum_{k=2}^{\infty} \)):
\[ \sum_{n=0}^{\infty} c_n x](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbbc1f6b1-9cf7-4fb9-9628-525fb0fcd15f%2Fe74ed2bf-f969-4b73-8ed7-f686ae0a54b1%2F628uka_processed.png&w=3840&q=75)
Transcribed Image Text:***Understanding a Power Series Expression***
In this section, we'll explore how to rewrite a given expression using a single power series, focusing on expressions whose general term involves \( x^k \).
Consider the following expression:
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} + \sum_{n=0}^{\infty} c_n x^{n+2} \]
Our goal is to express this combined series as a single power series involving \( x^k \).
To do so, we'll proceed similarly to the method outlined in Example 3 in Section 6.1.
Here is the given expression:
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} + \sum_{n=0}^{\infty} c_n x^{n+2} \]
### Breakdown of the Steps:
1. **Identify and Rewrite Each Sum:**
- For the first summation: \( \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} \):
- Notice that the power of \( x \) is \( n-2 \). We can let \( k = n-2 \) which implies \( n = k+2 \).
- Substitute \( n \) with \( k+2 \) in the first sum, and accordingly adjust the limits of summation from \( n=2 \) to \( \infty \):
\[ \sum_{n=2}^{\infty} n(n-1)c_n x^{n-2} = \sum_{k=0}^{\infty} (k+2)(k+1)c_{k+2} x^k \]
- For the second summation: \( \sum_{n=0}^{\infty} c_n x^{n+2} \):
- Notice that the power of \( x \) is \( n+2 \). We can let \( k = n+2 \) which implies \( n = k-2 \).
- Substitute \( n \) with \( k-2 \) (but keep in mind the negative indices should adjust the lower limit to match \( \sum_{k=2}^{\infty} \)):
\[ \sum_{n=0}^{\infty} c_n x
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