x,y满足x-y+6>=0,x+y>=0,x

x,y满足x-y+6>=0,x+y>=0,x 变量x,y满足x-2y=0,x 设Z=X+Y,其中X,Y满足X+2Y>=0,X-Y 己知实数x,y满足{ (x-y+6) (x+y-6)>=0,1 已知实数x、y满足x²+y²+4x-6y+13=0 已知x,y满足4x²+y²-4x-6y+10=0 实数x,y满足2x+5y>=0,2x-3y>=-6,2x+y 如果有理数x.y满足x^2+y^2+4x-6y+13=0,则y^x=? 已知x,y满足x^2+y^2-6x+8y+25=0,求y^x的值 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 已知x、y满足：x^2+y^2+6x-10y+34=0,求y-x的值 实数x,y满足{x-y+1>=0;y+1>=0;x+y+1 求f(x,y)=x+y+7的最大值,使(x,y)满足x+2y≤10,2x+y≥6,y≥0 已知实数x,y满足{x=>0,y 当x,y满足条件x>=0,y 线性规划 当x.y满足x>=0,y 已知实数x,y满足{x=>0,y 已知x,y满足不等式组,x>=0,y