Math Problem Statement
Solution
The image shows several matrices and their corresponding ranks calculated through row reduction to normal form. Let's analyze each matrix and the result:
- Matrix (1): 2 & -4 & 3 & -10 & 0 \\ 1 & -2 & -1 & -4 & 2 \\ 0 & 1 & -1 & 3 & 1 \\ 4 & -7 & 4 & -4 & 5 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_1) = 4$$.
- Matrix (2): 2 & 1 & 2 & 4 \\ 4 & 2 & 5 & 8 \\ 3 & 1 & 4 & 6 \\ 1 & 1 & 2 & 2 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_2) = 3$$.
- Matrix (3): 2 & 3 & -1 & -1 \\ 1 & 1 & -2 & -4 \\ 3 & 1 & 3 & 2 \\ 6 & 3 & 0 & -7 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_3) = 3$$.
- Matrix (4): 0 & 1 & -3 & -4 \\ 1 & 0 & 1 & 1 \\ 3 & 1 & 0 & 2 \\ 1 & 1 & -2 & 0 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_4) = 2$$.
- Matrix (5): 4 & 3 & 2 & 1 \\ 5 & 1 & -1 & -2 \\ 0 & 1 & 2 & 3 \\ 1 & -1 & 3 & -2 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_5) = 4$$.
- Matrix (6): 1 & 2 & 1 & 0 \\ -2 & 4 & 3 & 0 \\ 1 & 0 & 2 & -1 \end{pmatrix}$$ The rank of this matrix is $$\text{Rank}(A_6) = 3$$.
Let me know if you'd like further explanation on how to compute the ranks of these matrices, or if you want to go over the row reduction steps!
Here are five follow-up questions you might consider:
- What is the method for reducing a matrix to its row echelon form?
- How does row echelon form help in determining the rank of a matrix?
- What is the difference between row echelon form and reduced row echelon form?
- How is the rank of a matrix related to the linear independence of its rows or columns?
- Can a matrix have different row and column ranks?
Tip: The rank of a matrix represents the maximum number of linearly independent row or column vectors within the matrix.
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Math Problem Analysis
Mathematical Concepts
Matrix Algebra
Rank of a Matrix
Row Echelon Form
Linear Independence
Formulas
Gaussian elimination to row echelon form
Rank of a matrix = Number of non-zero rows in row echelon form
Theorems
Rank-Nullity Theorem
The rank of a matrix is the dimension of the row space
Suitable Grade Level
Grades 11-12, College Level