5. x' -1 - = × 2 -3,

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
**General Solutions and Phase Portraits:** In each of Problems 1 through 6, find the general solution of the given system of equations. Also draw a direction field and a phase portrait. Describe how the solutions behave as \( t \rightarrow \infty \).
Transcribed Image Text:**General Solutions and Phase Portraits:** In each of Problems 1 through 6, find the general solution of the given system of equations. Also draw a direction field and a phase portrait. Describe how the solutions behave as \( t \rightarrow \infty \).
Here is the transcription and explanation suitable for an educational website:

---

**Topic: Linear Algebra - Systems of Differential Equations**

**Example Problem**

**Given System:**

\[ \mathbf{x}' = \begin{pmatrix} -1 & -\frac{1}{2} \\ 2 & -3 \end{pmatrix} \mathbf{x} \]

---

**Explanation:**

In this problem, we are given a system of differential equations written in matrix form. Here, \(\mathbf{x}'\) represents the derivative of the vector \(\mathbf{x}\) with respect to time, and \(\mathbf{x}\) is a column vector.

The matrix on the right-hand side is:

\[ \begin{pmatrix} -1 & -\frac{1}{2} \\ 2 & -3 \end{pmatrix} \]

This matrix contains the coefficients that define the interactions between the variables in the vector \(\mathbf{x}\).

### Key Points:

1. **Matrix Elements**:
   - The entry in the first row and first column (\(-1\)) affects the rate of change of the first variable in \(\mathbf{x}\).
   - The entry in the first row and second column (\(-\frac{1}{2}\)) also impacts the first variable, but through the second variable.
   - Similarly, the second row elements (\(2\) and \(-3\)) affect the second variable in \(\mathbf{x}\).

2. **Understanding the System**:
   This system of differential equations can be solved to understand how the variables in \(\mathbf{x}\) evolve over time. The coefficients in the matrix determine the nature of this evolution, which could include aspects like growth, decay, oscillations, etc.

### Application:

Such systems are commonly found in various fields including physics, engineering, economics, and biological systems. By solving these, one can predict the behavior of the system under given conditions.

---

This detailed explanation provides a context and fundamental understanding for students learning about systems of differential equations in the context of linear algebra.
Transcribed Image Text:Here is the transcription and explanation suitable for an educational website: --- **Topic: Linear Algebra - Systems of Differential Equations** **Example Problem** **Given System:** \[ \mathbf{x}' = \begin{pmatrix} -1 & -\frac{1}{2} \\ 2 & -3 \end{pmatrix} \mathbf{x} \] --- **Explanation:** In this problem, we are given a system of differential equations written in matrix form. Here, \(\mathbf{x}'\) represents the derivative of the vector \(\mathbf{x}\) with respect to time, and \(\mathbf{x}\) is a column vector. The matrix on the right-hand side is: \[ \begin{pmatrix} -1 & -\frac{1}{2} \\ 2 & -3 \end{pmatrix} \] This matrix contains the coefficients that define the interactions between the variables in the vector \(\mathbf{x}\). ### Key Points: 1. **Matrix Elements**: - The entry in the first row and first column (\(-1\)) affects the rate of change of the first variable in \(\mathbf{x}\). - The entry in the first row and second column (\(-\frac{1}{2}\)) also impacts the first variable, but through the second variable. - Similarly, the second row elements (\(2\) and \(-3\)) affect the second variable in \(\mathbf{x}\). 2. **Understanding the System**: This system of differential equations can be solved to understand how the variables in \(\mathbf{x}\) evolve over time. The coefficients in the matrix determine the nature of this evolution, which could include aspects like growth, decay, oscillations, etc. ### Application: Such systems are commonly found in various fields including physics, engineering, economics, and biological systems. By solving these, one can predict the behavior of the system under given conditions. --- This detailed explanation provides a context and fundamental understanding for students learning about systems of differential equations in the context of linear algebra.
Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,