Find the null space associated with the equations: 2x+z+w = 0 7x-6y–z–w-v = 0 -5x+4y+w = 0

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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**Problem Statement:**

Find the null space associated with the equations:

1. \(2x + z + w = 0\)
2. \(7x - 6y - z - w - v = 0\)
3. \(-5x + 4y + w = 0\)

To solve this problem, transform these equations into a matrix equation and find the basis for the null space. The null space represents all possible solutions \((x, y, z, w, v)\) to the equations. 

**Matrix Representation:**

The system can be written in matrix form \(A \mathbf{x} = \mathbf{0}\), where:

\[
A = \begin{bmatrix}
2 & 0 & 1 & 1 & 0 \\
7 & -6 & -1 & -1 & -1 \\
-5 & 4 & 0 & 1 & 0 
\end{bmatrix}
\]

\(\mathbf{x} = \begin{bmatrix} x \\ y \\ z \\ w \\ v \end{bmatrix}\)

\(\mathbf{0} = \begin{bmatrix} 0 \\ 0 \\ 0 \end{bmatrix}\)

The null space is the set of all vectors \(\mathbf{x}\) such that \(A \mathbf{x} = \mathbf{0}\).
Transcribed Image Text:**Problem Statement:** Find the null space associated with the equations: 1. \(2x + z + w = 0\) 2. \(7x - 6y - z - w - v = 0\) 3. \(-5x + 4y + w = 0\) To solve this problem, transform these equations into a matrix equation and find the basis for the null space. The null space represents all possible solutions \((x, y, z, w, v)\) to the equations. **Matrix Representation:** The system can be written in matrix form \(A \mathbf{x} = \mathbf{0}\), where: \[ A = \begin{bmatrix} 2 & 0 & 1 & 1 & 0 \\ 7 & -6 & -1 & -1 & -1 \\ -5 & 4 & 0 & 1 & 0 \end{bmatrix} \] \(\mathbf{x} = \begin{bmatrix} x \\ y \\ z \\ w \\ v \end{bmatrix}\) \(\mathbf{0} = \begin{bmatrix} 0 \\ 0 \\ 0 \end{bmatrix}\) The null space is the set of all vectors \(\mathbf{x}\) such that \(A \mathbf{x} = \mathbf{0}\).
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