(10.4.7)--2.2.2逆矩阵的求法线性代数

1待定系数法例1设0,112A的逆阵.求A解设是的逆矩阵,dcbaBA则dcbaAB01121001100122badbca,1,0,02,12badbca.2,1,1,0dcba所以.21101A2公式法,331212321A.1151531132B解331212321...