What is (\partial)/(\partial x)(cos(2x)*2) ?

The answer to (\partial)/(\partial x)(cos(2x)*2) is -4sin(2x)

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(\partial)/(\partial x)(cos(2x)*2)

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

- 4 sin (2 x)

Solution steps

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

Take the constant out:

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

= 2 \frac{\partial}{\partial x} (cos (2 x))

Apply the chain rule:

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

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

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

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

Simplify

= - 4 sin (2 x)

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What is (\partial)/(\partial x)(cos(2x)*2) ?
The answer to (\partial)/(\partial x)(cos(2x)*2) is -4sin(2x)