$$$\ln\left(u\right)$$$の導関数
入力内容
$$$\frac{d}{du} \left(\ln\left(u\right)\right)$$$ を求めよ。
解答
自然対数の導関数は $$$\frac{d}{du} \left(\ln\left(u\right)\right) = \frac{1}{u}$$$:
$${\color{red}\left(\frac{d}{du} \left(\ln\left(u\right)\right)\right)} = {\color{red}\left(\frac{1}{u}\right)}$$したがって、$$$\frac{d}{du} \left(\ln\left(u\right)\right) = \frac{1}{u}$$$。
解答
$$$\frac{d}{du} \left(\ln\left(u\right)\right) = \frac{1}{u}$$$A
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