$$$\sqrt[4]{2} x \sqrt[4]{x^{5}}$$$ 的积分
您的输入
求$$$\int \sqrt[4]{2} x \sqrt[4]{x^{5}}\, dx$$$。
解答
输入已重写为:$$$\int{\sqrt[4]{2} x \sqrt[4]{x^{5}} d x}=\int{\sqrt[4]{2} x^{\frac{9}{4}} d x}$$$。
对 $$$c=\sqrt[4]{2}$$$ 和 $$$f{\left(x \right)} = x^{\frac{9}{4}}$$$ 应用常数倍法则 $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$:
$${\color{red}{\int{\sqrt[4]{2} x^{\frac{9}{4}} d x}}} = {\color{red}{\sqrt[4]{2} \int{x^{\frac{9}{4}} d x}}}$$
应用幂法则 $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$,其中 $$$n=\frac{9}{4}$$$:
$$\sqrt[4]{2} {\color{red}{\int{x^{\frac{9}{4}} d x}}}=\sqrt[4]{2} {\color{red}{\frac{x^{1 + \frac{9}{4}}}{1 + \frac{9}{4}}}}=\sqrt[4]{2} {\color{red}{\left(\frac{4 x^{\frac{13}{4}}}{13}\right)}}$$
因此,
$$\int{\sqrt[4]{2} x^{\frac{9}{4}} d x} = \frac{4 \sqrt[4]{2} x^{\frac{13}{4}}}{13}$$
加上积分常数:
$$\int{\sqrt[4]{2} x^{\frac{9}{4}} d x} = \frac{4 \sqrt[4]{2} x^{\frac{13}{4}}}{13}+C$$
答案
$$$\int \sqrt[4]{2} x \sqrt[4]{x^{5}}\, dx = \frac{4 \sqrt[4]{2} x^{\frac{13}{4}}}{13} + C$$$A