Find the maximum value of y = 1/2 sin^2θ + 1/2 cos 3θ
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a-maths
2010-01-23 6:40 am
回答 (1)
2010-01-23 8:27 am
✔ 最佳答案
Please see the calculation below:圖片參考：http://img137.imageshack.us/img137/1493/calculate1.png
2010-01-23 00:27:42 補充：
http://img85.imageshack.us/img85/6373/calculate.png
http://img137.imageshack.us/img137/1493/calculate1.png
2010-01-23 00:53:46 補充：
Correction: when cosθ =0.5902 d^2y/dθ^2 = 3.9645 (minimum)
收錄日期: 2021-04-23 18:27:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100122000051KK01535