已知x,y满足约束条件x>=0,y>=0,3x+4y>=4.则x的平方+y的平方+2x的最小值是多少?谢

已知x,y满足约束条件x-y+5>=0 x+y>=0 X 已知x,y满足约束条件：x-y+1>=0,x+y-2>=0,x 已知X,Y满足约束条件x-y+5>=0 x+y>=0 X 已知x,y满足约束条件x+y==-1,y>=1 若0= 已知变量x,y满足约束条件x+2y-3=0,y-1 已知变量x,y满足约束条件x+2y-3=0,y-1 已知xy满足约束条件y=2 2X+y 设x,y满足约束条件x>=0 x>=y 2x-y 设x,y满足约束条件{x>=0,y>=x,4x+3y 设x,y满足约束条件x>=0 y>=x 4x+3y 当实数x,y,满足约束条件{x>0 y>=x 2x+y+k 线性规划的一道题已知变量x,y满足约束条件x+y-1=0x-y-1 设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2 设变量x,y满足约束条件:x-y+3>=0 x+y>=0 -2 实数x,y满足约束条件.求范围实数x,y满足约束条件x-y+2>=0 x+y-4>0x x、y满足的约束条件0 已知x.y 满足约束条件,x+y+5≧0 x-y≦0 y≦0则z=2x+4y 的最小值是 已知x,y满足约束条件｛x+y+1≤0,x-y+1≥0,y+1≥0,则z=2x-y的最大值是?