计算行列式Dn=1 1 0 0 01 x1 x2 0 0 0x3a1 b1 x2^21 1 0 0 0 1x1 x2 0 0 0 x3a1 b1 1 1 1 c1a2 b2 x1 x2 x3 c2
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计算行列式Dn=1 1 0 0 01 x1 x2 0 0 0x3a1 b1 x2^21 1 0 0 0 1x1 x2 0 0 0 x3a1 b1 1 1 1 c1a2 b2 x1 x2 x3 c2
计算行列式Dn=1 1 0 0 01 x1 x2 0 0 0x3a1 b1 x2^2
1 1 0 0 0 1
x1 x2 0 0 0 x3
a1 b1 1 1 1 c1
a2 b2 x1 x2 x3 c2
x1^2 x2^2 0 0 0 x3^2
a3 b3 x1^2 x2^2 x 3^2 c3
计算行列式Dn=1 1 0 0 01 x1 x2 0 0 0x3a1 b1 x2^21 1 0 0 0 1x1 x2 0 0 0 x3a1 b1 1 1 1 c1a2 b2 x1 x2 x3 c2
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