2. Let A = 2 3 1 2 4 356 5 and D = 500 030 002 Compute AD and DA, observing any relationship between the rows and/or columns of A and the product. Find a 3 x 3 matrix B other than the identity matrix such that AB = BA.
2. Let A = 2 3 1 2 4 356 5 and D = 500 030 002 Compute AD and DA, observing any relationship between the rows and/or columns of A and the product. Find a 3 x 3 matrix B other than the identity matrix such that AB = BA.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question

Transcribed Image Text:Sure! Here's the transcription for educational purposes:
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**Problem 2**
Let \( A = \begin{bmatrix} 1 & 2 & 3 \\ 2 & 4 & 5 \\ 3 & 5 & 6 \end{bmatrix} \) and \( D = \begin{bmatrix} 5 & 0 & 0 \\ 0 & 3 & 0 \\ 0 & 0 & 2 \end{bmatrix} \).
**Tasks:**
1. Compute the product \( AD \) and \( DA \).
2. Observe any relationship between the rows and/or columns of matrix \( A \) and the resulting product matrices.
3. Find a \( 3 \times 3 \) matrix \( B \) (other than the identity matrix) such that the matrices \( AB = BA \).
---
In the above problem:
- Matrices \( A \) and \( D \) are given as \( 3 \times 3 \) matrices.
- Matrix \( A \) contains arbitrary numeric elements.
- Matrix \( D \) is a diagonal matrix where the diagonal elements are 5, 3, and 2, indicating simple scaling transformations when multiplied with another matrix.
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