What is the derivative of-128cos(2x) ?

The derivative of-128cos(2x) is 256sin(2x)

What is the first derivative of-128cos(2x) ?

The first derivative of-128cos(2x) is 256sin(2x)

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\frac{d}{d x} (- 128 cos (2 x))

256 sin (2 x)

Solution steps

\frac{d}{d x} (- 128 cos (2 x))

Take the constant out:

(a \cdot f)^{'} = a \cdot f^{'}

= - 128 \frac{d}{d x} (cos (2 x))

Apply the chain rule:

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

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

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

= - 128 (- sin (2 x) \cdot 2)

Simplify

= 256 sin (2 x)

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What is the derivative of-128cos(2x) ?
The derivative of-128cos(2x) is 256sin(2x)
What is the first derivative of-128cos(2x) ?
The first derivative of-128cos(2x) is 256sin(2x)