Integral of -2*x^3*sin(1)

The calculator will find the integral/antiderivative of $$$- 2 x^{3} \sin{\left(1 \right)}$$$, with steps shown.

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Find $$$\int \left(- 2 x^{3} \sin{\left(1 \right)}\right)\, dx$$$.

The trigonometric functions expect the argument in radians. To enter the argument in degrees, multiply it by pi/180, e.g. write 45° as 45*pi/180, or use the appropriate function adding 'd', e.g. write sin(45°) as sind(45).

Solution

Apply the constant multiple rule $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$ with $$$c=- 2 \sin{\left(1 \right)}$$$ and $$$f{\left(x \right)} = x^{3}$$$:

$${\color{red}{\int{\left(- 2 x^{3} \sin{\left(1 \right)}\right)d x}}} = {\color{red}{\left(- 2 \sin{\left(1 \right)} \int{x^{3} d x}\right)}}$$

Apply the power rule $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$ with $$$n=3$$$:

$$- 2 \sin{\left(1 \right)} {\color{red}{\int{x^{3} d x}}}=- 2 \sin{\left(1 \right)} {\color{red}{\frac{x^{1 + 3}}{1 + 3}}}=- 2 \sin{\left(1 \right)} {\color{red}{\left(\frac{x^{4}}{4}\right)}}$$

Therefore,

$$\int{\left(- 2 x^{3} \sin{\left(1 \right)}\right)d x} = - \frac{x^{4} \sin{\left(1 \right)}}{2}$$

Add the constant of integration:

$$\int{\left(- 2 x^{3} \sin{\left(1 \right)}\right)d x} = - \frac{x^{4} \sin{\left(1 \right)}}{2}+C$$

Answer

$$$\int \left(- 2 x^{3} \sin{\left(1 \right)}\right)\, dx = - \frac{x^{4} \sin{\left(1 \right)}}{2} + C$$$A

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Integral of $$$- 2 x^{3} \sin{\left(1 \right)}$$$

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