来自刘飞雷的问题
7.{4x+3y-2z=-7①8.{5x-3y+6z=-3①{5x-6y+z=1②{3x-y+3z=0②{2x+z=-2③{y+3z=6③x=-1,y=-1,z=0x=-3,y=0,z=2
7.{4x+3y-2z=-7①8.{5x-3y+6z=-3①
{5x-6y+z=1②{3x-y+3z=0②
{2x+z=-2③{y+3z=6③
x=-1,y=-1,z=0x=-3,y=0,z=2
1回答
2020-03-06 06:07