线性代数

A=(2 -1 1 2？

A= 2 -1 -1 1 2 1 1 -2 1 4 4 -6 2 -2 4 3 6 -9 7 9 r4-r1-r2,r3-2r1,r1-2r2 0 -3 3 -1 -6 1 1 -2 1 4 0 -4 4 -4 0 0 6 -6 5 3 r4+2r1,r3*(-1/4),r1+3r3,r2-r3 0 0 0 2 -6 1 0 -1 0 4 0 1 -1 1 0 0 0 0 3 -9 r1*(1/2),r3-r1,r4-3r1 0 0 0 1 -3 1 0 -1 0 4 0 1 -1 0 3 0 0 0 0...全部

  A= 2 -1 -1 1 2 1 1 -2 1 4 4 -6 2 -2 4 3 6 -9 7 9 r4-r1-r2,r3-2r1,r1-2r2 0 -3 3 -1 -6 1 1 -2 1 4 0 -4 4 -4 0 0 6 -6 5 3 r4+2r1,r3*(-1/4),r1+3r3,r2-r3 0 0 0 2 -6 1 0 -1 0 4 0 1 -1 1 0 0 0 0 3 -9 r1*(1/2),r3-r1,r4-3r1 0 0 0 1 -3 1 0 -1 0 4 0 1 -1 0 3 0 0 0 0 0 交换行 1 0 -1 0 4 0 1 -1 0 3 0 0 0 1 -3 0 0 0 0 0。
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