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第六讲

第六讲. Laplace 展开 Cramer 法则. §1.5 行列式按一行 ( 列 ) 的展开. GA06. 余子式 ：. Complement miner. 代数余子式 ：. Algebraic Complement. 推论 1 ：. k. 推论 2 ：. k. Example4:. 例 16: 计算 n 阶三对角线行列式. 按第一列分项. 第 1 行提出公因子后. Example 6:. §6. 克莱姆 (Cramer) 法则. 推论 : 对于齐次线性方程组. 反证法 , 若有非零解. 唯一性 :. Example7:.

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第六讲

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  1. 第六讲 Laplace展开 Cramer法则

  2. §1.5 行列式按一行(列)的展开 GA06 余子式：

  3. Complement miner 代数余子式： Algebraic Complement

  4. 推论1： k 推论2： k

  5. Example4:

  6. 例16:计算n阶三对角线行列式 按第一列分项 第1行提出公因子后

  7. Example6:

  8. §6.克莱姆(Cramer)法则

  9. 推论: 对于齐次线性方程组

  10. 反证法,若有非零解

  11. 唯一性:

  12. Example7: 故方程组有唯一解

  13. Example8:

  14. 推论1: i j 推论2: i j

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