若实数x,y满足x2+y2=1,则y−2x−1
若实数XY满足X2+Y2=1,则X-2Y的最大值为
已知实数x.y满足(x2+y2)(x2+y2-1)=2,求x2+y2的值
已知实数x,y满足x2+y2=1,求y+2x+1
若实数x、y满足约束条件|x|+|y|≤1,则z=x2+y2-2x-2y的最大值为______.
若实数x,y满足x2+y2+xy=1,则x+y的最大值是 ( )
已知实数x,y 满足x2+y2+2x=0则x+y得最小值
若实数x,y满足X2+y2-2X+4y=0,则x-2y的最大值为?
若实数x,y满足3x2+2y2=6x,则x2+y2的最大值为______.
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知实数x、y满足(x2+y2)(x2+y2-1)=2,则x2+y2的值为______.
已知实数x,y满足x2+y2-2x+4y=0,则x2+y2的最小值是