System of Equations 04. 05. Chapter 04. 05



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Since there are no square submatrices of order 4 as is a 34 matrix, the rank of is at most 3. So let us look at the square submatrices of of order 3; if any of these square submatrices have determinant not equal to zero, then the rank is 3. For example, a submatrix of the augmented matrix is


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