若x、y满足1≤x-2y≤2和-2≤x+5y≤-1,则5x+11y的取值范围?
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xy满足约束条件x≥-1,y≥x,3x+2y≤5,则2x+y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?
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+y≤2,(x-1)²+(y-1)²≤2,则2x+y的取值范围是
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
设实数x,y满足{x-y-2≤0,x+2y-5≥0,y-2≤0.求z=x+y和z=x+y/x的取值范围
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:X+2Y-5≤0,X≥1,Y>0,X+2Y-3≥0,那么y/x的取值范围
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( )
若实数x y满足约束条件x≤2 y ≤2 x+y≥2 则x+2y的取值范围
满足约束条件x-y≥-1,x+y≤3且x、y非负的Z=x-2y的取值范围?