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$$$\frac{t}{50}$$$ 的導數
您的輸入
求$$$\frac{d}{dt} \left(\frac{t}{50}\right)$$$。
解答
套用常數倍法則 $$$\frac{d}{dt} \left(c f{\left(t \right)}\right) = c \frac{d}{dt} \left(f{\left(t \right)}\right)$$$，使用 $$$c = \frac{1}{50}$$$ 與 $$$f{\left(t \right)} = t$$$：
$${\color{red}\left(\frac{d}{dt} \left(\frac{t}{50}\right)\right)} = {\color{red}\left(\frac{\frac{d}{dt} \left(t\right)}{50}\right)}$$套用冪次法則 $$$\frac{d}{dt} \left(t^{n}\right) = n t^{n - 1}$$$，取 $$$n = 1$$$，也就是 $$$\frac{d}{dt} \left(t\right) = 1$$$：
$$\frac{{\color{red}\left(\frac{d}{dt} \left(t\right)\right)}}{50} = \frac{{\color{red}\left(1\right)}}{50}$$因此，$$$\frac{d}{dt} \left(\frac{t}{50}\right) = \frac{1}{50}$$$。
答案
$$$\frac{d}{dt} \left(\frac{t}{50}\right) = \frac{1}{50}$$$A
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