已知实数x,y,z满足4x^2/1+4x^2=y,4y^2/1+4y^2=z,4z^2/1+4z^2=x,求x,y,z的值

已知实数x,y,z满足2｜x-y｜+√2y+z+z2-z+1/4=0求x+y+z的值 已知三个实数x,y,z满足条件(z-x)^2-4(x-y)(y-z)=0,求证:x,y,z成等差数列 已知实数X,Y,Z满足X+2Y+Z=1,求X^2+4Y^2+Z^2的最小值 已知实数x,y,z满足4x^2/1+4x^2=y,4y^2/1+4y^2=z,4z^2/1+4z^2=x,求x,y,z的值 已知非负实数x,y,z满足x+y+z=3 (2),求证x^2/(1+x^4)+y^2/(1+y^4)+z^2/(1+z^4)≤1/(1+x)+1/(1+y)+1/(1+z) 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知复数z=x+yi,实数x,y满足x≥1,y≤2,x-y≤1,则|z-4|的最小值是 已知实数x,y满足{x≧0 y≧x 4x+3y≦12}.z=2y+3/x+1 的取值范围 已知实数x,y,z,满足x²+4y²+根号-z²=2x+4y-2,求x+2y-z的平方 已知实数x,y,z满足x=6-y,z^2-4z+4=xy-9,求x,y,z的值 已知实数x,y,z满足x=6-y,z^2-4z+4=xy-9,求x,y,z的值. 已知实数x,y满足(x+2y+1)(x-y+4)小于等于零.求z=x平方+y平方的最小值及取得最小值 已知实数x.y.z满足4x-4y+1的绝对值加3分之一的2y+z的平方根+z的平方-2z+1=0.求（y+x）乘x的平方 已知实数x,y,z满足x+y+z=2根号x-1+2根号y-1+2根号z-1求X+2Y+3Z 已知三个实数x,y,z满足(z-x)平方-4(x-y)(y-z)=0.求证x,y,z成等差数列 已知实数xyz满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3求x+y+z的值 已知有实数x,y,z满足x^2+4y^2+z^2-2x-12y+4z+14=0,求xyz的值.