设实数x,y满足x²+1/2y²4-xy+2y=0.则x=___,y=___
设实数x,y满足x²+1/2y²4-xy+2y=0.则x=___,y=___
实数x、y满足x≥y≥1和2x^2-xy+5x-y+4=0,则x+y=___
设实数x,y满足x^2+2xy+4y^2=1,则x+2y最大值
已知实数x,y满足xy+1=2x+y,且x>1,则(x+1)(y+2)的最小值为 ___ .
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
已知实数x,y满足5x²+2y²+1=6xy+4x-2y,则x²-xy+2000y
已知实数x,y满足x2+4xy+4y2-x-2y+14=0,则x+2y的值为 ___ .
设z=kx+y,其中实数x,y满足x+y-2≥0x-2y+4≥02x-y-4≤0,若z的最大值为12,则实数k= ___
设正实数x,y 满足xy=18,则2x²+y²的最小值是多少
已知正实数x,y满足x2+y2+xy=1,则x+y的最大值是___.
实数x y满足x≥y≥1和2x²-xy-5x+y+4=0求x+y之值
若正实数x.y满足x+y=xy,则x+2y的最小值