set y=lnx / x^2, find y' and y''
show the steps plz!!!
微分......ln的微分
2012-11-28 5:50 am
回答 (1)
2012-11-28 8:32 am
✔ 最佳答案
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參考: pingshek
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121127000016KK05723