用高斯消元法求方程组2x+2y-2z=8x-y+3z=16

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用高斯消元法求方程组2x+2y-2z=8x-y+3z=16用高斯消元法求方程组2x+2y-2z=8x-y+3z=16用高斯消元法求方程组2x+2y-2z=8x-y+3z=162,2,-2,8；1,-1

用高斯消元法求方程组2x+2y-2z=8x-y+3z=16
用高斯消元法求方程组
2x+2y-2z=8
x-y+3z=16

用高斯消元法求方程组2x+2y-2z=8x-y+3z=16
2,2,-2,8；1,-1,3,16；变换：1,1,-1,4；1,-1,3,16；变换：1,1,-1,4；0,-2,4,12；变换：1,1,-1,4；0,1,-2,-6；变换：1,0,1,10；0,1,-2,-6.→x+z=10；y-2z=-6.设x=t,则z=10-t,y=2z-6=14-2t.所以：[x,y,z]=[t,14-2t,10-t].

用高斯消元法求方程组2x+2y-2z=8x-y+3z=16 解方程组:5x=8z.5y解方程组:5x=8z.5y=2z.x+2y+3z=2. 方程组 2x+y+z=7,x+2y+z=8,x+y+2z=9 快解方程组x+y-z=0,2x+y+z=7,x-3y+z=8 方程组X:Y:Z=4:7:8,X+Y+2Z=54 求XYZ 解方程组：x：y：z=4：7：8,x+y+2z=54 已知方程组2x-y+z=5 5x+8y-z=9 方程组：{x+y-z=6,x+z=16,x-y+2z=17 已知方程组【X:Y:Z=1:3:2,X+Y+Z=8】求Y+3Z的值已知方程组x:y:z=1:3:2 x+y+z=8 求y+3z的值如何解方程组(x+2y)(x+2z)=-16,(y+2z)(y+2x)=8,(z+2x)(z+2y)=-7 已知关于x y z的方程组2x-3y+5z=7 x+2y-3z=8,则4x+y-z= 已知方程组x+2y-z=0,2x-y+8z=0,求x*x+y*y+z*z/xy+yz的值已知XYZ满足方程组 X+Y-Z=6 Y+Z-X=2 Z+X-y=0 求X Y Z的值8点下线解方程组 2x+y+z=7 x+2y+z=8 x+y+2x=9 解方程组5x=8z 5y=2z x+2y+3z=2.7 x+y=-2 x+z=13 y+z=1 解方程组x+y=-2x+z=13y+z=1解方程组解方程组x+y=-2,y+z=-4,z+x=-12 解方程组x+y=-2,y+z=-4,z+x=-12