若线段x ,y 满足[2x-3y]*[3x+2y]=0 则x/y=?
若线段x ,y 满足[2x-3y]*[3x+2y]=0 则x/y=?怎样算出2x-3y=0或3x+2y=0 当2x-3y
若x,y满足|2x-y-3|+|3x+2y+1|=0,则x= y=
若变量x,y满足约束条件{x>=-1;y>=x;3x+2y
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)/(x+y)=3 则(x+2y)/(6x-7y)等于
若实数x,y满足x的平方+y的平方-4x-2y+5=0,则(x+y)/2x-3=
设变量X,Y满足约束条件{X-Y+3>=0,X+Y>=0,-2
若实数x,y满足2x*X+3y*y=1,S=3x*x-2y*y,则S的取值范围为
如果分式3x-6y/x+y=0,那么x,y 应满足 A、x=2y B、x≠-y C、x=2y且x≠-y D、x=2y且y
若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是?
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
若实数x,y满足约束条件x-y-2=0,2y-3