感激不尽1.x,y满足(x-y-1)(x+y)
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感激不尽1.x,y满足(x-y-1)(x+y)
已知x,y满足{x>=1,x+y
已知x,y满足{x>=1,x+y
这是今天作业,1道有点难,感激不尽(今天学的因式分解的完全平方公式)1.实数x,y,满足x^2-2x+4y=5,求x+2y最大值准确的绝对追分
满足｜X ｜+｜Y｜
已知x,y满足y
若x,y满足y
y满足条件【x-y
实数x,y满足|x+y|≤1,|x-y|≤1.证明|x|+|y|≤1.
设变量x,y满足约束条件x-y>-1,x+y>1,3x-y
设x,y满足约束条件x+y>=1,x-y>=-1,2x-y
设x,y满足约束条件x+y>=1,x-y>=-1,2x-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x-y
设变量x,y满足x+y
设X,Y满足约束条件X+Y
当x,y满足条件|x|+|y|
已知实数X,Y满足{|x+y|