X+Y+Z=0 2X-Y+Z=0 求X比Y比Z
来源:百度知道 编辑:UC知道 时间:2024/07/02 17:46:14
我们老师出的狗屁题目,难啊,回答的详细点啊
两式相加得3x+2z=0
z=-3x/2
x+y-3x/2=0
y=x/2
x:y:z=2:1:-3
X+Y+Z+2X-Y+Z=O 1+2得
3X+2Z=O
X:Z=-2:3
X+Y+Z-2X+Y-Z=O 1-2得
2Y-X=O
Y:X=1:2
设X=1则Y=1/2
Z=-3/2
X:Y:Z=1:1/2:(-3/2)
=2;1;(-3)
两式相加得3x+2z=0
z=-3x/2
x+y-3x/2=0
y=x/2
x:y:z=2:1:-3
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