设正实数x,y,z满足x+2y+z=1,则1x+y+9(x+y)y+z
设正实数x,y,z满足x+2y+z=1,则1x+y+9(x+y)y+z
已知 x,y,z都是正实数,且 x+y+z=xyz 证明 (y+x)/z+(y+z)/x+(z+x)/y≥2(1/x+1
已知实数x,y,z满足x/(y+z)+y/(z+x)+z/(x+y)=1,求x2/(y+z)+y2/(z+x)+z2/(
设X,Y,Z为正实数,求(1+2X)*(3Y+4X)*(4y+3z)*(2z+1)/(x*y*z)的最小值
设正实数x,y,z满足x^2-3xy+4y^2-z=0,则xy/z取得最大值时,2/x+1/y+2/z的最大值为
已知实数xyz满足x/y+z+y/z+x+z/x+y=1求x^2/y+z+y^2/z+x+z^2/x+y的值
已知正实数x,y,z满足2x(x+1y
实数x,y,z满足x=y+根号2,2xy+2*根号2*z*z+1=0,则x+y+z等于多少
设x y为正实数,且x+y=1,证明:(1+1/x)(1+z/y)>=9
设x,y,z为正实数,x+y+z=1.求证:yz/x+zx/y+xy/z+9xyz>=1+x^2+y^2+z^2
设正数xyz满足2x+3y+4z=9,则1/x+y +4/2y+z +9/3z+x最小值
已知实数x,y,z满足:x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,则x+y+z=