x,y满足(x-3)2+(y+4)2≤16 则x2+y2的最小值?

已知实数x,y满足,X-2y≥-4,3x-2y≤12,x+y≥2,则y/(x+1)的取值范围 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 已知X和Y满足3X+4Y=2,X-Y-1/7 已知实数x,y满足条件x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)的最大值是 设实数x,y满足x-y-2≥0,x+2y-4≥0,2y-3≤0(1)2x+y的最小值为 实数x,y满足不等式组x+y≤3,x-y≥-1,y≥1,则z=4x+2y的最大值是 若实数x,y满足x-4y+3≤0,3x+5y-25≤0,x≥1,则2x-y的最大值是多少 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 满足x-y≤1,x+y≥1,y≤3/2,则2x+y的最大值是 满足x-y≤1,x+y≥1,y≤3/2,则2x+y的最大值是 设x,y为实数,满足-2≤x*y^2≤3,-1≤x^2/y≤4,则x^3/y^4的最大值是? 若实数x、y满足｛1≤x+y≤3 、-1≤x-y≤1｝求4x+2y的取值范围 若实数x,y满足1≤x+y≤3,-1≤x-y≤,求4x+2y的取值范围 有图更佳 设实数x、y满足不等式组1≤x+y≤4和y+2≥|2x-3|,试求(x,y)所在的平面区域 已知实数x、y满足2x-3y=4,并且x≥0,y≤1,则x-y的最大值是?最小值是?） 若实数x,y满足不等式组｛x+2y≥2,2x+y≤4,x-y≥-1 则3lx-1l+y的最大值若实数x,y满足不等式组｛x+2y≥2,2x+y≤4,x-y≥-1 则3lx-1l+y的最大值是? 若实数x,y满足不等式组｛x+2y≥2,2x+y≤4,x-y≥-1 则3lx-1l+y的最大值若实数x,y满足不等式组｛x+2y≥2,2x+y≤4,x-y≥-1 则3lx-1l+y的最大值是? 设实数x,y满足2x+y≤4,x-y≥-1,x-2y≤2,则z=x+y的最大值为