$$$\sqrt{3} x$$$ 的導數
您的輸入
求$$$\frac{d}{dx} \left(\sqrt{3} x\right)$$$。
解答
套用常數倍法則 $$$\frac{d}{dx} \left(c f{\left(x \right)}\right) = c \frac{d}{dx} \left(f{\left(x \right)}\right)$$$,使用 $$$c = \sqrt{3}$$$ 與 $$$f{\left(x \right)} = x$$$:
$${\color{red}\left(\frac{d}{dx} \left(\sqrt{3} x\right)\right)} = {\color{red}\left(\sqrt{3} \frac{d}{dx} \left(x\right)\right)}$$套用冪次法則 $$$\frac{d}{dx} \left(x^{n}\right) = n x^{n - 1}$$$,取 $$$n = 1$$$,也就是 $$$\frac{d}{dx} \left(x\right) = 1$$$:
$$\sqrt{3} {\color{red}\left(\frac{d}{dx} \left(x\right)\right)} = \sqrt{3} {\color{red}\left(1\right)}$$因此,$$$\frac{d}{dx} \left(\sqrt{3} x\right) = \sqrt{3}$$$。
答案
$$$\frac{d}{dx} \left(\sqrt{3} x\right) = \sqrt{3}$$$A
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