x-2y+3z=0可得2x-4y+6z=0,又2x-3y+4z=0,二式相减得-y+2Z=0;y:z=2:1
4x-8y+12Z=0,6X-9Y+12z=0;2x-y=0,x:y=1:2
所以,x:y:z=1:2:1
1:2:1
解两个的关系!假设一个!就好了!
x-2y+3z=0 (1)
2x-3y+4z=0 (2)
2(1), 2x-4y+6z = 0 (3)
(2)-(3), y-2z=0
y=2z (4)
(4)-->(1), x-4z+3z=0
x=z
x:y:z = 1:2:1
没分