Integral de $$$-1 + \frac{1}{x^{4}}$$$

Halla $$$\int \left(-1 + \frac{1}{x^{4}}\right)\, dx$$$.

Integra término a término:

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

Aplica la regla de la constante $$$\int c\, dx = c x$$$ con $$$c=1$$$:

$$\int{\frac{1}{x^{4}} d x} - {\color{red}{\int{1 d x}}} = \int{\frac{1}{x^{4}} d x} - {\color{red}{x}}$$

Aplica la regla de la potencia $$$\int x^{n}\, dx = \frac{x^{n + 1}}{n + 1}$$$ $$$\left(n \neq -1 \right)$$$ con $$$n=-4$$$:

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

Por lo tanto,

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

Añade la constante de integración:

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

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