x y满足｛3x+8y+15≥0.｛3x+8y+15≥0 5x+3y-6≤0 2x-5y+10≥0则x-y的最大值为多少,最小值为多少? 答案6 -5

设x.y满足条件y>=0.X-Y+1>=0.x+y-3 满足3x+4y 已知实数x,y满足约束条件x+y>3,y 设变量x,y满足约束条件x-y>-1,x+y>1,3x-y 变量x,y满足约束条件,x+y>=3,x-y>=-1,2x-y 已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y 若x,y满足条件2x-y≥0,2x+3y≤8,y≥0,则z=x+3y的最大值为 若x,y为正整数,且满足3x(x+y)-y(x+y)=7,求x,y 已知x,y满足条件5x+3y 如果实数x,y满足x-4y+3 设变量x.y满足条件3x+2y 当x,y满足条件|x+3|+|y-2| 求Z=2x+y的最大值,使xy满足约束条件,y≤x,x+y≤1,y≥-11.求Z=2x+y的最大值,使x y满足约束条件,y≤x,x+y≤1,y≥-1 2.求Z=3x+5y的最大值最小值,使XY满足条件 5x+3y≤15,y≤x+1,x-5y≤3求详解,带图最好. 若变量x,y满足约束条件{x>=-1;y>=x;3x+2y 设x,y满足约束条件{x>=0,y>=x,4x+3y 设x,y满足约束条件x>=0 y>=x 4x+3y 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? 已知x,y满足（2x+3y+1)的平方+|4x-9y-8|=0.求x,y的值