What is the derivative of cos(9x^2) ?

The derivative of cos(9x^2) is -sin(9x^2)*18x

What is the first derivative of cos(9x^2) ?

The first derivative of cos(9x^2) is -sin(9x^2)*18x

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\frac{d}{d x} (cos (9 x^{2}))

- sin (9 x^{2}) \cdot 18 x

Solution steps

\frac{d}{d x} (cos (9 x^{2}))

Apply the chain rule:

- sin (9 x^{2}) \frac{d}{d x} (9 x^{2})

= - sin (9 x^{2}) \frac{d}{d x} (9 x^{2})

\frac{d}{d x} (9 x^{2}) = 18 x

= - sin (9 x^{2}) \cdot 18 x

\int \frac{1}{2 x ^{2} - 4 x + 20} d x

\frac{\partial}{\partial x} (x^{2} e^{y z^{2}})

x \to - 3.1 lim (x^{2})

\frac{d y}{d x} = \frac{x x ^{2} - y ^{2} + y ^{2}}{x y}

\int sin (\frac{x y}{2}) d y

What is the derivative of cos(9x^2) ?
The derivative of cos(9x^2) is -sin(9x^2)*18x
What is the first derivative of cos(9x^2) ?
The first derivative of cos(9x^2) is -sin(9x^2)*18x