The question is about maths and stat, differentiation, point of inflexion and turning point. As follows:
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point of inflexion
2010-07-23 11:34 pm
回答 (1)
2010-07-24 8:50 am
收錄日期: 2021-04-13 17:23:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100723000051KK00897