Nature of the determinant (1)
Nature 1: The result is unchanged after transposition.
Transpose refers to the exchange of elements, rows and columns on both sides of the diagonal.
Property 2: Determinant exchange row or column change sign
Property three: add in a row (column)
Property 4: Extract the common factor by one row (column)
Property 5: Add a multiple of one row (column) to another row (column), the result is unchanged.
Property 6: There are n squares minus n more than 0 determinants and the result is zero.
Property 7: Odd-order antisymmetric determinant is 0
Stage summary: There are
still a lot of things to do after making a list of tasks, and it's not enough except working time. Looking at the comparison of blogs written by others, the understanding of others is far from my only knowledge of formulas, how the formulas come from and some problem-solving methods. But it is more a summary of the combination with reality and understanding, which is worth learning.