integral de 1/(x^2(e^{1/x)-5)}

Solución

\int \frac{1}{x ^{2} ( e ^{\frac{1}{x}} - 5 )} d x

\frac{1}{5 x} - \frac{1}{5} ln e^{\frac{1}{x}} - 5 + C

Pasos de solución

\int \frac{1}{x ^{2} ( e ^{\frac{1}{x}} - 5 )} d x

Aplicar integración por sustitución

: \int - \frac{1}{e ^{u} - 5} d u

= \int - \frac{1}{e ^{u} - 5} d u

Sacar la constante:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= - \int \frac{1}{e ^{u} - 5} d u

Aplicar integración por sustitución

: \int \frac{1}{v ( v - 5 )} d v

= - \int \frac{1}{v ( v - 5 )} d v

Tomar la fracción parcial de

\frac{1}{v ( v - 5 )} : - \frac{1}{5 v} + \frac{1}{5 ( v - 5 )}

= - \int - \frac{1}{5 v} + \frac{1}{5 ( v - 5 )} d v

Aplicar la regla de la suma:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= - (- \int \frac{1}{5 v} d v + \int \frac{1}{5 ( v - 5 )} d v)

\int \frac{1}{5 v} d v = \frac{1}{5} ln ∣ v ∣

\int \frac{1}{5 ( v - 5 )} d v = \frac{1}{5} ln ∣ v - 5 ∣

= - (- \frac{1}{5} ln ∣ v ∣ + \frac{1}{5} ln ∣ v - 5 ∣)

Sustitución hacia atrás

= - (- \frac{1}{5} ln e^{\frac{1}{x}} + \frac{1}{5} ln e^{\frac{1}{x}} - 5)

Simplificar

- (- \frac{1}{5} ln e^{\frac{1}{x}} + \frac{1}{5} ln e^{\frac{1}{x}} - 5) : \frac{1}{5 x} - \frac{1}{5} ln e^{\frac{1}{x}} - 5

= \frac{1}{5 x} - \frac{1}{5} ln e^{\frac{1}{x}} - 5

Agregar una constante a la solución

= \frac{1}{5 x} - \frac{1}{5} ln e^{\frac{1}{x}} - 5 + C

\int \frac{1}{2} x^{2} - 2 x + 6 d x

\frac{3}{s} + \frac{24}{s ^{2}}

\frac{d ^{2} y}{d x} + 4 \frac{d y}{d x} - 12 y = 0

\frac{\partial}{\partial x} (x sin (8 x^{2} y))

\frac{- 60}{- 2 + 5 s}