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$$$\sin{\left(\theta \right)}$$$ 的积分
您的输入
求$$$\int \sin{\left(\theta \right)}\, d\theta$$$。
解答
正弦函数的积分为 $$$\int{\sin{\left(\theta \right)} d \theta} = - \cos{\left(\theta \right)}$$$:
$${\color{red}{\int{\sin{\left(\theta \right)} d \theta}}} = {\color{red}{\left(- \cos{\left(\theta \right)}\right)}}$$
因此，
$$\int{\sin{\left(\theta \right)} d \theta} = - \cos{\left(\theta \right)}$$
加上积分常数：
$$\int{\sin{\left(\theta \right)} d \theta} = - \cos{\left(\theta \right)}+C$$
答案
$$$\int \sin{\left(\theta \right)}\, d\theta = - \cos{\left(\theta \right)} + C$$$A
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