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$$$\frac{1}{a}$$$ 的积分
您的输入
求$$$\int \frac{1}{a}\, da$$$。
解答
$$$\frac{1}{a}$$$ 的积分为 $$$\int{\frac{1}{a} d a} = \ln{\left(\left|{a}\right| \right)}$$$:
$${\color{red}{\int{\frac{1}{a} d a}}} = {\color{red}{\ln{\left(\left|{a}\right| \right)}}}$$
因此，
$$\int{\frac{1}{a} d a} = \ln{\left(\left|{a}\right| \right)}$$
加上积分常数：
$$\int{\frac{1}{a} d a} = \ln{\left(\left|{a}\right| \right)}+C$$
答案
$$$\int \frac{1}{a}\, da = \ln\left(\left|{a}\right|\right) + C$$$A
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