What is the first derivative of-2x-1 ?

The first derivative of-2x-1 is -2

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derivative of-2x-1

\frac{d}{d x} (- 2 x - 1)

- 2

Solution steps

\frac{d}{d x} (- 2 x - 1)

Apply the Sum/Difference Rule:

(f \pm g)^{'} = f^{'} \pm g^{'}

= - \frac{d}{d x} (2 x) - \frac{d}{d x} (1)

\frac{d}{d x} (2 x) = 2

\frac{d}{d x} (1) = 0

= - 2 - 0

Simplify

= - 2

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