1963 AMC 12 第 1 题
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所有题目均经美国数学协会（MAA）官方合法授权使用。
1.
以下哪一点不在函数 的图像上？
Which one of the following points is not on the graph of
小提示：
代入坐标前先检查定义域
Check the domain before substituting coordinates
大提示：
所列的某个 坐标会使分母为零
The denominator vanishes at one of the listed -coordinates
解答：
表达式 在 时没有定义。因此，横坐标为 的点不可能在其图像上。
所以正确答案是 D。
The expression is undefined when Therefore no point whose first coordinate is can lie on its graph.
Thus, the correct answer is D.
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