题库搜索>数据充分DS-15008
In the xy-plane, region Q consists of all points (x, y) such that x2+y2≤100 . Is the point (a, b) in region Q?
(1)a + b = 14
(2)a>b
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
完善解答 
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刘易斯
这道题要转换成x+y=14这个函数与圆的交点问题，通过做过圆心的垂直线可以得到点（7，7） --所以有两个交点，所以并不能确定在Q内还是Q外
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2021-09-17 16:22:14
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数据充分DS
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