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Derivative of $$$- 2 t$$$
Related calculators: Logarithmic Differentiation Calculator, Implicit Differentiation Calculator with Steps
Your Input
Find $$$\frac{d}{dt} \left(- 2 t\right)$$$.
Solution
Apply the constant multiple rule $$$\frac{d}{dt} \left(c f{\left(t \right)}\right) = c \frac{d}{dt} \left(f{\left(t \right)}\right)$$$ with $$$c = -2$$$ and $$$f{\left(t \right)} = t$$$:
$${\color{red}\left(\frac{d}{dt} \left(- 2 t\right)\right)} = {\color{red}\left(- 2 \frac{d}{dt} \left(t\right)\right)}$$Apply the power rule $$$\frac{d}{dt} \left(t^{n}\right) = n t^{n - 1}$$$ with $$$n = 1$$$, in other words, $$$\frac{d}{dt} \left(t\right) = 1$$$:
$$- 2 {\color{red}\left(\frac{d}{dt} \left(t\right)\right)} = - 2 {\color{red}\left(1\right)}$$Thus, $$$\frac{d}{dt} \left(- 2 t\right) = -2$$$.
Answer
$$$\frac{d}{dt} \left(- 2 t\right) = -2$$$A
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