就看你怎么看，(2X-2) 还是 2(X-1)，不同顺序。可以拿个简单的函数试试，体会一下。

来源: Numero 于 2025-06-14 11:16:26 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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