若实数x、y满足{1≤x+y≤3 、-1≤x-y≤1}求4x+2y的取值范围
设实数x,y满足{x-y-2≤0 x+2y-5≥0 y-2≤0.(1)求z=x+y的取值范围;(2)求u=(x+y)/x
已知实数x,y满足(x-y+6)(x+y-6)≥0,1≤x≤4,(1)求x^2+y^(2)-2的取值范围,(2)求y/(
问:(1)已知实数x,y满足不等式x^2-2x≥y^2-2y,若1≤x≤4,求y/x的取值范围;
(1)已知实数x,y满足不等式x²-2x≥y²-2y,若1≤x≤4,求y/x的取值范围;
实数x,y满足x+y≤2,(x-1)²+(y-1)²≤2,则2x+y的取值范围是
实数x,y满足x+2y-1≤0,x≥0,y≥0,则绝对值2x+y-1的取值范围
设x、y满足约束条件{x≥0 y≥x 4x+3y≤12}则2y+3/x+1的取值范围是?
已知实数x,y满足x>0,y>0,且2x-y≤0,x-3y+5≥0,则z=(1/4)^x(1/2)^y的取值范围
若实数X,Y满足约束条件:X+2Y-5≤0,X≥1,Y>0,X+2Y-3≥0,那么y/x的取值范围
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
已知实数x,y满足(x-y+6)(x+y-6)≥0,1≤x≤4,第(1)问,求x的平方+y的平方-2的取值范围,第(2)
设实数xy满足x+y-3≤0,y-x/2≥0,x-1≥0,则求u=y/x-x/y的取值范围