HHHHHHHHH(四)升级法(加边法)a, + b,a2ara, + b,·anD, =b,b, ...b, +0.a, +b.aia2解:HHHHHHHHHHHH1aan.0a +b101)D =02福e...0a, +b.a,nIn+1衍列式的计算下页返回上页行列式的计算 (四)升级法(加边法) 1 1 2 1 2 2 1 2 1 2 , 0 n n n n n n a b a a a a b a D b b b a a a b + + = + 1 2 1 1 2 1 2 2 1 2 1 1 0 0 0 n n n n n n n a a a a b a a D a a b a a a a b + + = + + 解: 1)