求解4个未知数的方程组a+c=-1ac+b+d=-5ad+bc=-6bd=-4
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求解4个未知数的方程组a+c=-1ac+b+d=-5ad+bc=-6bd=-4
求解4个未知数的方程组
a+c=-1
ac+b+d=-5
ad+bc=-6
bd=-4
求解4个未知数的方程组a+c=-1ac+b+d=-5ad+bc=-6bd=-4
a=-2
b=-4
c=1
d=1
或
a=1
b=1
c=-2
d=-4
好像答案还有
观察凑数
[a == -2, b == -4, c == 1, d == 1]
[a == 1, b == 1, c == -2, d == -4]
[a == 0.866025403784438*I + 1.73606797749979, b == 1.07046626931927*I + 0.618033988749895, c == -0.866025403784436*I - 2.7...
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[a == -2, b == -4, c == 1, d == 1]
[a == 1, b == 1, c == -2, d == -4]
[a == 0.866025403784438*I + 1.73606797749979, b == 1.07046626931927*I + 0.618033988749895, c == -0.866025403784436*I - 2.73606797749979, d == 2.802517076888146*I - 1.618033988749894]
[a == 1.73606797749979 - 0.866025403784438*I, b == 0.618033988749895 - 1.07046626931927*I, c == 0.866025403784437*I - 2.736067977499788, d == -2.802517076888146*I - 1.618033988749894]
[a == 0.866025403784440*I - 2.73606797749979, b == -2.802517076888154*I - 1.618033988749894, c == 1.736067977499786 - 0.866025403784443*I, d == 0.618033988749892 - 1.070466269319269*I]
[a == -0.866025403784440*I - 2.73606797749979, b == 2.802517076888154*I - 1.618033988749894, c == 0.866025403784443*I + 1.736067977499786, d == 1.070466269319269*I + 0.618033988749892]
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