What is the derivative of 3cos(x) ?

The derivative of 3cos(x) is -3sin(x)

What is the first derivative of 3cos(x) ?

The first derivative of 3cos(x) is -3sin(x)

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derivative of

3 cos (x)

- 3 sin (x)

Solution steps

\frac{d}{d x} (3 cos (x))

Take the constant out:

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

= 3 \frac{d}{d x} (cos (x))

Apply the common derivative:

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

= 3 (- sin (x))

Simplify

= - 3 sin (x)

What is the derivative of 3cos(x) ?
The derivative of 3cos(x) is -3sin(x)
What is the first derivative of 3cos(x) ?
The first derivative of 3cos(x) is -3sin(x)