What is the derivative of cos(2*x) ?

The derivative of cos(2*x) is -sin(2x)*2

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

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

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\frac{d}{d x} (cos (2 \cdot x))

- sin (2 x) \cdot 2

Solution steps

\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

= - sin (2 x) \cdot 2

y = 8 x, (4, 16)

\frac{\partial}{\partial x} ((75 - x) \frac{1}{3} π x^{2})

\frac{\partial}{\partial x} (x ln (y) + \frac{1}{9} x^{3})

x - 3

x \to 9 - lim (\frac{7}{x - 9})

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