ln 微分運算

2010-04-07 3:16 am

圖片參考:http://img691.imageshack.us/img691/4539/53865464.jpg


請問以上的微分答案是甚麼,連同整個的2次方。

最好有步驟,求高手幫忙,謝謝!

回答 (4)

2010-04-07 5:04 am
✔ 最佳答案
d/dx[ln(x+√(1+x^2)]
=1/[x+√(1+x^2)]*(1+x/√(1+x^2))
=1/√(1+x^2)

2010-04-06 22:35:01 補充:
sorry for forgetting the square
because I can't see in the picture

{d/dx[ln(x+√(1+x^2)]}^2
={1/[x+√(1+x^2)]*(1+x/√(1+x^2))}^2
=[1/√(1+x^2)]^2
=1/(1+x^2)
2010-04-07 5:28 am
for 002 answer...how about the square outside d/dx??
2010-04-07 3:42 am


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