Second derivative of $$$1$$$
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Find $$$\frac{d^{2}}{dx^{2}} \left(1\right)$$$.
Solution
Find the first derivative $$$\frac{d}{dx} \left(1\right)$$$
The derivative of a constant is $$$0$$$:
$${\color{red}\left(\frac{d}{dx} \left(1\right)\right)} = {\color{red}\left(0\right)}$$Thus, $$$\frac{d}{dx} \left(1\right) = 0$$$.
Next, $$$\frac{d^{2}}{dx^{2}} \left(1\right) = \frac{d}{dx} \left(0\right)$$$
The derivative of a constant is $$$0$$$:
$${\color{red}\left(\frac{d}{dx} \left(0\right)\right)} = {\color{red}\left(0\right)}$$Thus, $$$\frac{d}{dx} \left(0\right) = 0$$$.
Therefore, $$$\frac{d^{2}}{dx^{2}} \left(1\right) = 0$$$.
Answer
$$$\frac{d^{2}}{dx^{2}} \left(1\right) = 0$$$A