find dy/dx by using chain rule
更新1:
please use chain rule...
chain rule
回答 (1)
2008-10-13 5:13 pm
✔ 最佳答案
dy/dx = d[sin(cos(tan(3x +1)))]/d[cos(tan(3x+1))] times d[cos(tan(3x+1))]/d[tan(3x +1)] times d[tan(3x+1)]/d(3x+1) times d(3x +1)/dx= cos(cos(tan(3x+1)) times -sin(tan(3x+1)) times sec^2(3x+1) times 3
= -3[cos(cos(tan(3x+1)))][sin(tan(3x+1))][sec^2(3x+1)].
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081012000051KK03030