若x、y满足0≤x≤20≤y≤2x-y≥1,则(x-1)2+(y-1)2的取值范围是 ___ .
设x、y满足约束条件{x≥0 y≥x 4x+3y≤12}则2y+3/x+1的取值范围是?
已知变量x、y满足x-y-2≤0,x+2y-5≥0,y-2≤0,则m=(2x-y-1)/(x+2y+1)的取值范围是?
若实数x,y满足x−y+1≤0x>0y≤2,则yx的取值范围是( )
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
设实数x,y满足{x-y-2≤0 x+2y-5≥0 y-2≤0.(1)求z=x+y的取值范围;(2)求u=(x+y)/x
实数x,y满足x+2y-1≤0,x≥0,y≥0,则绝对值2x+y-1的取值范围
实数x,y满足x+y≤2,(x-1)²+(y-1)²≤2,则2x+y的取值范围是
已知实数x,y满足x>0,y>0,且2x-y≤0,x-3y+5≥0,则z=(1/4)^x(1/2)^y的取值范围
若实数x,y满足约束条件2x+y≤4,x≥0,y≥0,则目标函数z=(y-x)/(x+1)的取值范围为?
已知变量xy满足约束条件x≥-1,y≥x,3x+2y≤5,则2x+y的取值范围是
设实数x,y满足约束条件x≥1且x≠2y≥1x+2y−5≤0,则z=x+y−1x−2的取值范围为( )
1.若实数X,Y满足不等式组 y≥0 x-y≤4 2x-y-2≥0,则W=(y-1)/(x+1)的取值范围是?