Differentiation
FIND dy over dx
y=ln ( cos(2x 2次))2次
唔識計... 有冇人可以幫下我...
同埋differentiation 呢課 我超級唔明ga...
有冇人可以簡單講下係計d咩? 要做d咩?
呢課最重要係d咩?thanks!!!
maths & statis
2006-10-24 5:18 am
回答 (1)
2006-10-24 5:20 am
✔ 最佳答案
dy/dx={1/[cos(2x^2)]^2 }[2cos(2x^2)][-sin(2x^2)][4x]
=-8x[cos(2x^2)][sin(2x^2)]/[cos(2x^2)]^2
=-8x[sin(2x^2)]/[cos(2x^2)]
= -8x[tan(2x^2)]
收錄日期: 2021-04-25 16:51:06
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061023000051KK04456