一.行列式1.行列式定义\(\left|\begin{matrix}a_{11}&a_{12}&...&a_{1n}\\a_{21}&a_{22}&...&a_{2n}\\...&...&...&...\\a_{n1}&a_{n2}&...&a_{nn}\end{matrix}\right|\)将此称为\(n\)阶行列式设\