Sandoval Willis
03/26/2023 · High School
State the type of matrix \( P \) and matrix \( Q \). giving a reason for your answer. ( 4 Marks) \[ \begin{array}{rrrrr}6 & 0 & 0 \\ 0 & 4 & 0 \\ 0 & 0 & 1\end{array} \quad \text { and } Q=\begin{array}{lll}5 & 0 & 0 \\ 0 & 5 & 0 \\ 0 & 0 & 5\end{array} \]
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To determine the type of matrix \( P \) and matrix \( Q \), we need to analyze their properties.
Matrix \( P \):
\[ P = \begin{array}{rrrr}6 & 0 & 0 \\ 0 & 4 & 0 \\ 0 & 0 & 1\end{array} \]
Matrix \( Q \):
\[ Q = \begin{array}{lll}5 & 0 & 0 \\ 0 & 5 & 0 \\ 0 & 0 & 5\end{array} \]
1. Matrix \( P \):
- Matrix \( P \) is a diagonal matrix because all the non-diagonal elements are zero.
- The diagonal elements of matrix \( P \) are 6, 4, and 1.
- Therefore, matrix \( P \) is a diagonal matrix.
2. Matrix \( Q \):
- Matrix \( Q \) is also a diagonal matrix because all the non-diagonal elements are zero.
- The diagonal elements of matrix \( Q \) are 5, 5, and 5.
- Therefore, matrix \( Q \) is a diagonal matrix.
In conclusion:
- Matrix \( P \) is a diagonal matrix.
- Matrix \( Q \) is a diagonal matrix.
Quick Answer
Matrix \( P \) and matrix \( Q \) are both diagonal matrices.
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