1.Why the derivative of xIna is Ina?
2.The derivative of 2e^x equal to (2)(e^x) because
Let y=2e^x
dy/dx=2(d/dx)(e^x)+(e^x)(d/dx)(2)
=2(e^x)+0
=2(e^x)
Am I right?
Derivative M1 maths
2014-09-26 1:28 am
回答 (4)
2014-09-26 11:10 am
✔ 最佳答案
The answer is as follows :
圖片參考：https://s.yimg.com/lo/api/res/1.2/Nclw2__EMzP2uqlFsQPBEg--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/https://farm3.staticflickr.com/2942/15353205685_b580b9491e_o.png
https://farm3.staticflickr.com/2942/15353205685_b580b9491e_o.png
參考: pingshek
2014-09-26 5:33 am
2014-09-26 4:49 am
1.But why d/dx(Inx)=1/x?
2014-09-26 2:49 am
1. ln a is just a constant, say k = ln a, then (kx)' = k
2. You can use "product rule" in this way as well, but no need.
If you check from the first principles, you know that the "2" can be taken out.
2014-09-26 02:43:19 補充：
HK~ 請作答。
還有 qid=7014092400095 這個帖，也請你作答。
2. You can use "product rule" in this way as well, but no need.
If you check from the first principles, you know that the "2" can be taken out.
2014-09-26 02:43:19 補充：
HK~ 請作答。
還有 qid=7014092400095 這個帖，也請你作答。
收錄日期: 2021-05-01 09:35:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140925000051KK00059