$$$\ln\left(x\right)$$$ 對 $$$e$$$ 的積分
您的輸入
求$$$\int \ln\left(x\right)\, de$$$。
解答
配合 $$$c=\ln{\left(x \right)}$$$,應用常數法則 $$$\int c\, de = c e$$$:
$${\color{red}{\int{\ln{\left(x \right)} d e}}} = {\color{red}{e \ln{\left(x \right)}}}$$
因此,
$$\int{\ln{\left(x \right)} d e} = e \ln{\left(x \right)}$$
加上積分常數:
$$\int{\ln{\left(x \right)} d e} = e \ln{\left(x \right)}+C$$
答案
$$$\int \ln\left(x\right)\, de = e \ln\left(x\right) + C$$$A
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