Integral von $$$\frac{2}{v}$$$

Bestimme $$$\int \frac{2}{v}\, dv$$$.

Wende die Konstantenfaktorregel $$$\int c f{\left(v \right)}\, dv = c \int f{\left(v \right)}\, dv$$$ mit $$$c=2$$$ und $$$f{\left(v \right)} = \frac{1}{v}$$$ an:

$${\color{red}{\int{\frac{2}{v} d v}}} = {\color{red}{\left(2 \int{\frac{1}{v} d v}\right)}}$$

Das Integral von $$$\frac{1}{v}$$$ ist $$$\int{\frac{1}{v} d v} = \ln{\left(\left|{v}\right| \right)}$$$:

$$2 {\color{red}{\int{\frac{1}{v} d v}}} = 2 {\color{red}{\ln{\left(\left|{v}\right| \right)}}}$$

Daher,

$$\int{\frac{2}{v} d v} = 2 \ln{\left(\left|{v}\right| \right)}$$

Fügen Sie die Integrationskonstante hinzu:

$$\int{\frac{2}{v} d v} = 2 \ln{\left(\left|{v}\right| \right)}+C$$

$$$\int \frac{2}{v}\, dv = 2 \ln\left(\left|{v}\right|\right) + C$$$A