$$$\sqrt{3} z^{32} \left(x - 3\right)$$$ 對 $$$x$$$ 的積分
您的輸入
求$$$\int \sqrt{3} z^{32} \left(x - 3\right)\, dx$$$。
解答
套用常數倍法則 $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$,使用 $$$c=\sqrt{3} z^{32}$$$ 與 $$$f{\left(x \right)} = x - 3$$$:
$${\color{red}{\int{\sqrt{3} z^{32} \left(x - 3\right) d x}}} = {\color{red}{\sqrt{3} z^{32} \int{\left(x - 3\right)d x}}}$$
逐項積分:
$$\sqrt{3} z^{32} {\color{red}{\int{\left(x - 3\right)d x}}} = \sqrt{3} z^{32} {\color{red}{\left(- \int{3 d x} + \int{x d x}\right)}}$$
配合 $$$c=3$$$,應用常數法則 $$$\int c\, dx = c x$$$:
$$\sqrt{3} z^{32} \left(\int{x d x} - {\color{red}{\int{3 d x}}}\right) = \sqrt{3} z^{32} \left(\int{x d x} - {\color{red}{\left(3 x\right)}}\right)$$
套用冪次法則 $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$,以 $$$n=1$$$:
$$\sqrt{3} z^{32} \left(- 3 x + {\color{red}{\int{x d x}}}\right)=\sqrt{3} z^{32} \left(- 3 x + {\color{red}{\frac{x^{1 + 1}}{1 + 1}}}\right)=\sqrt{3} z^{32} \left(- 3 x + {\color{red}{\left(\frac{x^{2}}{2}\right)}}\right)$$
因此,
$$\int{\sqrt{3} z^{32} \left(x - 3\right) d x} = \sqrt{3} z^{32} \left(\frac{x^{2}}{2} - 3 x\right)$$
化簡:
$$\int{\sqrt{3} z^{32} \left(x - 3\right) d x} = \frac{\sqrt{3} x z^{32} \left(x - 6\right)}{2}$$
加上積分常數:
$$\int{\sqrt{3} z^{32} \left(x - 3\right) d x} = \frac{\sqrt{3} x z^{32} \left(x - 6\right)}{2}+C$$
答案
$$$\int \sqrt{3} z^{32} \left(x - 3\right)\, dx = \frac{\sqrt{3} x z^{32} \left(x - 6\right)}{2} + C$$$A