Differentiation 01

2011-11-06 2:21 am
Differentiate the given function.


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回答 (1)

2011-11-06 3:40 am
✔ 最佳答案
g(u)=ln[u+√(u²+1)]g’(u)={1/[u+√(u²+1)]}[1+(1/2)(u²+1)^(-1/2)(2u)]g’(u)={1/[u+√(u²+1)]}[1+u/√(u²+1)]g’(u)={1/[u+√(u²+1)]}[√(u²+1)+u]/√(u²+1)g’(u)=[√(u²+1)+u]/{[u+√(u²+1)]√(u²+1)}g’(u)=[√(u²+1)+u]/[u√(u²+1)+u²+1]g’(u)=[√(u²+1)+u][√(u²+1)-u]/{[u√(u²+1)+u²+1][√(u²+1)-u]}g’(u)=(u²+1-u²)/[u(u²+1)-u²(u²+1)+u²(u²+1)-u³+√(u²+1)-u]g’(u)=1/[u³+u-u³+√(u²+1)-u]g’(u)=1/√(u²+1)
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