1959 AMC 12 第 25 题
先试着解答 1959 AMC 12 第 25 题，然后核对你的答案与精心整理的解答，解答来自 LIVE by Po-Shen Loh。你也可以参加完整限时模拟考试、查看全部 1959 AMC 12 解答，或核对答案。
所有题目均经美国数学协会（MAA）官方合法授权使用。
25.
若 大于或等于零，符号 表示 ；若 小于或等于零，则表示 。符号 表示“小于”，符号 表示“大于”。满足不等式 的 的取值集合，由所有满足下列条件的 组成：
The symbol means if is greater than or equal to zero, and if is less than or equal to zero; the symbol means “less than”; the symbol means “greater than.” The set of values satisfying the inequality consists of all such that:
其他年份的第 25 题
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- 2025 AMC 12B