What is the derivative of 3x^2cos(3x) ?

The derivative of 3x^2cos(3x) is 3(2xcos(3x)-3x^2sin(3x))

What is the first derivative of 3x^2cos(3x) ?

The first derivative of 3x^2cos(3x) is 3(2xcos(3x)-3x^2sin(3x))

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

derivative of

3 x^{2} cos (3 x)

3 (2 x cos (3 x) - 3 x^{2} sin (3 x))

Solution steps

\frac{d}{d x} (3 x^{2} cos (3 x))

Take the constant out:

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

= 3 \frac{d}{d x} (x^{2} cos (3 x))

Apply the Product Rule:

(f \cdot g)^{'} = f^{'} \cdot g + f \cdot g^{'}

f = x^{2}, g = cos (3 x)

= 3 (\frac{d}{d x} (x^{2}) cos (3 x) + \frac{d}{d x} (cos (3 x)) x^{2})

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

\frac{d}{d x} (cos (3 x)) = - sin (3 x) \cdot 3

= 3 (2 x cos (3 x) + (- sin (3 x) \cdot 3) x^{2})

Simplify

= 3 (2 x cos (3 x) - 3 x^{2} sin (3 x))

\frac{\partial}{\partial x} (5 x y - 3 x^{2} y)

\int x^{4} cos (x^{5}) d x

x \to 2 lim (\frac{2}{x} + 4)

\int_{0}^{4} \frac{2}{x} d x

\int (7 e^{9 x}) d x

What is the derivative of 3x^2cos(3x) ?
The derivative of 3x^2cos(3x) is 3(2xcos(3x)-3x^2sin(3x))
What is the first derivative of 3x^2cos(3x) ?
The first derivative of 3x^2cos(3x) is 3(2xcos(3x)-3x^2sin(3x))