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2.2.2.2 常见奇偶函数的速算(一轮)

笔记

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tip 补充

  • 关于 第 2 点,如果 f(x) 为奇函数,不仅 -f(x) 为奇函数,-f(ax)(a ≠0) 也为奇函数。相当于只是 x 轴伸缩变换,并不改变奇偶性

例题

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