-4- 2i 4+2i RR,+9R, -6– 3i -9+18i 5 5 -1 3i -4- 2i 4+2i| 5 0 -3i 0 3i 0 5 R-→SR;/(-6-31) 1 -1

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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please explain this step for me, I cannot figure out how to get this step 

The image contains a series of matrix operations, specifically elementary row operations on a given matrix. The process is intended to transform the matrix into a different form, likely for solving a system of equations or finding the matrix's reduced row echelon form. Here's a detailed transcription of the matrices and the operations performed:

1. **First Matrix and Operation:**

   \[
   \begin{bmatrix}
   \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\
   \frac{-6 - 3i}{5} & \frac{-9 + 18i}{5} & 0 \\
   0 & -1 & 3i
   \end{bmatrix}
   \]

   **Row Operation:**
   \[
   R_2 \rightarrow R_2 + 9R_1
   \]

   **Transformed Matrix:**

   \[
   \begin{bmatrix}
   \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\
   0 & 1 & -3i \\
   0 & -1 & 3i
   \end{bmatrix}
   \]

2. **Second Matrix and Operation:**

   **Row Operation:**
   \[
   R_2 \rightarrow 5R_2(1 - 6 - 3i)
   \]

   **Final Transformed Matrix:**

   \[
   \begin{bmatrix}
   \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\
   0 & 1 & -3i \\
   0 & -1 & 3i
   \end{bmatrix}
   \]

These steps demonstrate how specific row operations, such as replacing a row with a linear combination of itself and another row, adjust the elements to achieve a desired matrix form. The operations involve addition and scalar multiplication of complex numbers.
Transcribed Image Text:The image contains a series of matrix operations, specifically elementary row operations on a given matrix. The process is intended to transform the matrix into a different form, likely for solving a system of equations or finding the matrix's reduced row echelon form. Here's a detailed transcription of the matrices and the operations performed: 1. **First Matrix and Operation:** \[ \begin{bmatrix} \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\ \frac{-6 - 3i}{5} & \frac{-9 + 18i}{5} & 0 \\ 0 & -1 & 3i \end{bmatrix} \] **Row Operation:** \[ R_2 \rightarrow R_2 + 9R_1 \] **Transformed Matrix:** \[ \begin{bmatrix} \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\ 0 & 1 & -3i \\ 0 & -1 & 3i \end{bmatrix} \] 2. **Second Matrix and Operation:** **Row Operation:** \[ R_2 \rightarrow 5R_2(1 - 6 - 3i) \] **Final Transformed Matrix:** \[ \begin{bmatrix} \frac{-4 - 2i}{5} & \frac{4 + 2i}{5} & 0 \\ 0 & 1 & -3i \\ 0 & -1 & 3i \end{bmatrix} \] These steps demonstrate how specific row operations, such as replacing a row with a linear combination of itself and another row, adjust the elements to achieve a desired matrix form. The operations involve addition and scalar multiplication of complex numbers.
Expert Solution
Step 1

We have the matrix 1-4-2i54+2i500-6-3i5-9+18i500-13i0

Now, we need to apply the operation R25R2/-6-3i

This means we need to multiply row 2 by 5-6-3i

The first element in row 2 is 0. Therefore, multiplying 0 by 5-6-3i will result in 0 only. 

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