当实数x,y,满足约束条件{x>0 y>=x 2x+y+k
当x,y满足约束条件x≥0y≤x2x+y+k≤0(k
若实数x,y满足约束条件x-y-2=0,2y-3
当实数x、y满足约束条件x≥0y≤x2x+y+k≤0 (k为常数)时,z=x+3y有最大值为12,则实数k的值
设实数X,Y满足约束条件{X+2Y等于-1;Y>等于0,则
已知x,y满足约束条件:x-y+1>=0,x+y-2>=0,x
设x,y满足约束条件x>=0 x>=y 2x-y
当x、y满足x>=0,y>=x,2x+y+k
设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2
设X,Y满足约束条件X+Y
已知变量x,y满足约束条件:x+y≧1,y≦3,x-y≦1,若z=Kx+y最大值为5,则实数k
若实数x,y满足约束条件x-y≥0,x+y≥0,2x+y≤1,则y/(x+1)的最大值是多少,
已知x,y满足约束条件x-y+5>=0 x+y>=0 X