x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 16:11:11
x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.X+3Y
x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.
x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.
x^2+3y^2+4z^2=2,求|x+3y+4z|小于等于4.
X+3Y+4Z|2=x2+9y2+16z2+6xy+8xz+24yz
≤x2+9y2+16z2+3(x2+y2)+4(x2+z2)+24(y2+z2)
=8(x2+3y2+4z2)=16
所以 |X+3Y+4Z|≤4
x+2y=3x+2z=4y+z 求x:y:z
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
(x*x+2)(y*y+4)(z*z+8)=64xyz,求x,y,z
设|x|-|y|+|z|=|x+y+z|,且|x+y|=4,|y+z|=5,|y|=3,求(x-y-z)^2的值
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
求适合方程组 3x+2y-z=4 2x-y+2z=6 x+y+z
x:y:z=3:4:7 2x-3y+z=18 求:3x-2y+z
x+2y+3Z=10,4x+3y+2z=15,求x+y+z=
如果x/2=y/3=z/4,求(2x-y+3z)/(x+y-z)的值
2x+Y+3z=23,x+4y+5z=36,求X+2Y+3z~
已知x/3=y/4=z/2,求x+2y-z/x+y+z=?
若x:y:z=2:3:4,求x+y+z/x-2y+3z的值
x:y:z=2:3:4 求 3x+2y-z/x+y+z 的值
x:y:z=2:3:4,x+2y-z=12,求x,y,z
已知X:Y:Z=3:4:5,求4X+3Y-2Z/X+Y+Z的值
已知2x+5y+4z=6 3x+y-7z=-4求x+y-z
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.