1963 AMC 12 第 30 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。
30.
设
求新函数 ：把 在 中的每一次出现都替换为
并化简。化简后的 等于：
Let
Form a new function by replacing each in by
and simplify. The simplified expression is equal to:
其他年份的第 30 题
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