Mathematics
Senior High

9/(x+1)^2+xを微分するとxはいくつになりますか?

Answers

自己回答です。
f(x)=9/(x+1)^2+x→f(x)=9(x+1)^-2+xと書き換える
f'(x)=-18(1+x)^-3+1
f'(x)=-18/(1+x)^3+1

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