Integral von $$$e^{- \frac{6 x}{5}}$$$

Bestimme $$$\int e^{- \frac{6 x}{5}}\, dx$$$.

Sei $$$u=- \frac{6 x}{5}$$$.

Dann $$$du=\left(- \frac{6 x}{5}\right)^{\prime }dx = - \frac{6 dx}{5}$$$ (die Schritte sind » zu sehen), und es gilt $$$dx = - \frac{5 du}{6}$$$.

Daher,

$${\color{red}{\int{e^{- \frac{6 x}{5}} d x}}} = {\color{red}{\int{\left(- \frac{5 e^{u}}{6}\right)d u}}}$$

Wende die Konstantenfaktorregel $$$\int c f{\left(u \right)}\, du = c \int f{\left(u \right)}\, du$$$ mit $$$c=- \frac{5}{6}$$$ und $$$f{\left(u \right)} = e^{u}$$$ an:

$${\color{red}{\int{\left(- \frac{5 e^{u}}{6}\right)d u}}} = {\color{red}{\left(- \frac{5 \int{e^{u} d u}}{6}\right)}}$$

Das Integral der Exponentialfunktion lautet $$$\int{e^{u} d u} = e^{u}$$$:

$$- \frac{5 {\color{red}{\int{e^{u} d u}}}}{6} = - \frac{5 {\color{red}{e^{u}}}}{6}$$

Zur Erinnerung: $$$u=- \frac{6 x}{5}$$$:

$$- \frac{5 e^{{\color{red}{u}}}}{6} = - \frac{5 e^{{\color{red}{\left(- \frac{6 x}{5}\right)}}}}{6}$$

Daher,

$$\int{e^{- \frac{6 x}{5}} d x} = - \frac{5 e^{- \frac{6 x}{5}}}{6}$$

Fügen Sie die Integrationskonstante hinzu:

$$\int{e^{- \frac{6 x}{5}} d x} = - \frac{5 e^{- \frac{6 x}{5}}}{6}+C$$

$$$\int e^{- \frac{6 x}{5}}\, dx = - \frac{5 e^{- \frac{6 x}{5}}}{6} + C$$$A