依此类推线性方程组(1)可化为 (一∑41x=x+(-∑1x) 1 (b2-∑a2x)=x2+(b2 i≠2 x,+-(b x+ ≠n( ) 1 1 1 1 1 1 1 1   = = − n j j j j b a x a x 依此类推,线性方程组(1)可化为 ( ) 1 2 1 2 2 2 2 2   = = − n j j j j b a x a x ( ) 1 1   = = − n j i j i ij j ii i b a x a x ( ) 1 1   = = − n j n j n nj j n n n b a x a x          -----(4) ( ) 1 1 1 1 11 1 = = + − n j j j b a x a x ( ) 1 1 2 2 22 2 = = + − n j j j b a x a x ( ) 1 1 = = + − n j i ij j ii i b a x a x ( ) 1 1 = = + − n j n nj j nn n b a x a x