What is the derivative of cos(2y) ?

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

What is the first derivative of cos(2y) ?

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

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derivative of

cos (2 y)

- sin (2 y) \cdot 2

Solution steps

\frac{d}{d y} (cos (2 y))

Apply the chain rule:

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

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

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

= - sin (2 y) \cdot 2

\int \frac{1}{y ^{2} - 1} d y

n = 2 \sum \infty \frac{1}{n ( n + 2 )}

x y^{^{'}} + 2 y = 9 x

n = 1 \sum \infty \frac{( 4 ) ^{n - 1}}{5 ^{n}}

4 ln (7 + 2 x^{2})

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