老师您好：若实数X、Y满足X-Y＞=0,X+Y＞=0 ,X＜=1,则使目标函数Z=2x+y取得最小值的点为带图

老师您好：若实数X、Y满足X-Y＞=0,X+Y＞=0 ,X＜=1,则使目标函数Z=2x+y取得最小值的点为带图 若实数x,y满足x-y+1》=0,x+y>=0,x 若实数x,y满足x-y+1>=0,x+y>=0,x 若实数x满足条件x>=0,y 若实数x,y满足不等式组x>=0 ,y>=0,x+2y 若实数x,y满足x^2-xy-y^2 =0,则x/y=? 已知实数x,y满足{x=>0,y 已知实数x,y满足{x=>0,y 若实数x,y满足y 若实数x,y满足不等式y 若实数x,y满足x²+y²-2x+4y=0,求x-y的最大值 若实数x y满足（x+y)²+（x+y)-2=0则x+y值为 若实数x,y满足约束条件x-y-2=0,2y-3 实数x,y满足{x-y+1>=0;y+1>=0;x+y+1 若实数x,y满足x 若实数x,y满足x 若实数x.y满足√x-y+|y+3|=0,求y的x方的值.若实数x.y满足√x-y+|y+3|=0,求y的x方的值。 若x,y为实数且满足 x^+3y^-12y+12=0 ,求y^x的值?