已知实数x,y满足约束条件:x>=2 y>=2 x+y
已知xy满足约束条件y=2 2X+y
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
若实数x,y满足约束条件x-y-2=0,2y-3
已知实数x,y满足约束条件y≤x,x+y≤1,y≥-1,则z=2x+y的最大值是多少?
已知x,y 满足约束条件y>=2|x|,x+y-1
已知变量x,y满足约束条件x+2y-3=0,y-1
已知x,y满足约束条件{2x+5y>=10,2x-3y>=-6,2x+y
若变量x,y满足约束条件{x>=-1;y>=x;3x+2y
设x,y满足约束条件x>=0 x>=y 2x-y
设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2
已知x,y满足约束条件x-y+5>=0 x+y>=0 X
高中数学题(有关线性规划):已知变量x、y满足约束条件【x-y+2=1.x+y-7