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$$$2 \theta$$$의 도함수
사용자 입력
$$$\frac{d}{d\theta} \left(2 \theta\right)$$$을(를) 구하시오.
풀이
상수배 법칙 $$$\frac{d}{d\theta} \left(c f{\left(\theta \right)}\right) = c \frac{d}{d\theta} \left(f{\left(\theta \right)}\right)$$$을 $$$c = 2$$$와 $$$f{\left(\theta \right)} = \theta$$$에 적용합니다:
$${\color{red}\left(\frac{d}{d\theta} \left(2 \theta\right)\right)} = {\color{red}\left(2 \frac{d}{d\theta} \left(\theta\right)\right)}$$멱법칙 $$$\frac{d}{d\theta} \left(\theta^{n}\right) = n \theta^{n - 1}$$$을 $$$n = 1$$$에 대해 적용하면, 즉 $$$\frac{d}{d\theta} \left(\theta\right) = 1$$$:
$$2 {\color{red}\left(\frac{d}{d\theta} \left(\theta\right)\right)} = 2 {\color{red}\left(1\right)}$$따라서, $$$\frac{d}{d\theta} \left(2 \theta\right) = 2$$$.
정답
$$$\frac{d}{d\theta} \left(2 \theta\right) = 2$$$A
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