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Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
The two given vectors satisfy the given system of linear differential equations. But do they form a fundamental solution set to the system? Please use the Wronskian to calculate
![The image contains a mathematical problem related to differential equations and fundamental solution sets. Below is a transcription and explanation suitable for an educational website:
---
**Mathematical Problem:**
Consider the following vectors, \( X_1 \) and \( X_2 \):
\[ X_1 = \begin{bmatrix} e^{-2t} \\ e^{-2t} \end{bmatrix} \]
\[ X_2 = \begin{bmatrix} e^{-5t} \\ -2e^{-5t} \end{bmatrix} \]
Define the matrix differential equation:
\[ X' = \begin{bmatrix} -3 & 1 \\ 2 & -4 \end{bmatrix} X \]
**Question:**
Do \( X_1 \) and \( X_2 \) form a fundamental solution set for the given differential equation?
**Explanation:**
To determine if \( X_1 \) and \( X_2 \) form a fundamental solution set, we need to verify if they are solutions to the differential equation \( X' = AX \) and if they are linearly independent over the interval of interest. This involves checking if the Wronskian of the solutions is non-zero at some point in the interval. The calculations of derivatives and substitution into the differential equation, as well as the computation of the Wronskian, will provide these verifications.
*Note: The Wronskian, for functions that are exponentially decaying with different rates, can help in establishing the linear independence provided they solve the system correctly.*
---
This layout aims to guide students through the problem and its methodology, making it suitable for an educational website.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6d0ee2cb-cfe2-4eb9-a097-d38324436758%2F941bea8a-caac-4f72-a4e4-92a9b9c6aa8e%2Fnsr0c3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The image contains a mathematical problem related to differential equations and fundamental solution sets. Below is a transcription and explanation suitable for an educational website:
---
**Mathematical Problem:**
Consider the following vectors, \( X_1 \) and \( X_2 \):
\[ X_1 = \begin{bmatrix} e^{-2t} \\ e^{-2t} \end{bmatrix} \]
\[ X_2 = \begin{bmatrix} e^{-5t} \\ -2e^{-5t} \end{bmatrix} \]
Define the matrix differential equation:
\[ X' = \begin{bmatrix} -3 & 1 \\ 2 & -4 \end{bmatrix} X \]
**Question:**
Do \( X_1 \) and \( X_2 \) form a fundamental solution set for the given differential equation?
**Explanation:**
To determine if \( X_1 \) and \( X_2 \) form a fundamental solution set, we need to verify if they are solutions to the differential equation \( X' = AX \) and if they are linearly independent over the interval of interest. This involves checking if the Wronskian of the solutions is non-zero at some point in the interval. The calculations of derivatives and substitution into the differential equation, as well as the computation of the Wronskian, will provide these verifications.
*Note: The Wronskian, for functions that are exponentially decaying with different rates, can help in establishing the linear independence provided they solve the system correctly.*
---
This layout aims to guide students through the problem and its methodology, making it suitable for an educational website.
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