已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(x+2)取值范围是_____

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已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(x+2)取值范围是_____已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(

已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(x+2)取值范围是_____
已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(x+2)取值范围是_____

已知变量x,y满足约束条件为{x-y+2≤0,x+y-5≤0,x≥0}则(y-2)/(x+2)取值范围是_____
画出可行域
(y-2)/(x+2)表示点(x,y)与点(-2,2)连线的斜率
结合图形可知其取值范围为[0,3/2]

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