麻烦再给解一个,解非齐次线性方程组{2X+3Y+Z=4,X-2Y+4Z=-5,3X+8Y-2Z=13,4X-Y+9Z=-
麻烦再给解一个,解非齐次线性方程组{2X+3Y+Z=4,X-2Y+4Z=-5,3X+8Y-2Z=13,4X-Y+9Z=-
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
解方程一;{x+y-z=6,x-3y+2z=1,3x+2y-z=-7.②{3x+4z=7,2x+3y+z=9,5x-9y
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
x/2=y/3=z/5 x+3y-z/x-3y+z
解方程:{2x+3y+z=7,x+y+z=4,3x+y-z=-4
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程{3x -y+z=4 2x+3y-z=12 x+y+z=6