Integral dari $$$\frac{1}{2 \left(x - 2\right)}$$$

Temukan $$$\int \frac{1}{2 \left(x - 2\right)}\, dx$$$.

Terapkan aturan pengali konstanta $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$ dengan $$$c=\frac{1}{2}$$$ dan $$$f{\left(x \right)} = \frac{1}{x - 2}$$$:

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

Misalkan $$$u=x - 2$$$.

Kemudian $$$du=\left(x - 2\right)^{\prime }dx = 1 dx$$$ (langkah-langkah dapat dilihat di »), dan kita memperoleh $$$dx = du$$$.

Dengan demikian,

$$\frac{{\color{red}{\int{\frac{1}{x - 2} d x}}}}{2} = \frac{{\color{red}{\int{\frac{1}{u} d u}}}}{2}$$

Integral dari $$$\frac{1}{u}$$$ adalah $$$\int{\frac{1}{u} d u} = \ln{\left(\left|{u}\right| \right)}$$$:

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

Ingat bahwa $$$u=x - 2$$$:

$$\frac{\ln{\left(\left|{{\color{red}{u}}}\right| \right)}}{2} = \frac{\ln{\left(\left|{{\color{red}{\left(x - 2\right)}}}\right| \right)}}{2}$$

Oleh karena itu,

$$\int{\frac{1}{2 \left(x - 2\right)} d x} = \frac{\ln{\left(\left|{x - 2}\right| \right)}}{2}$$

Tambahkan konstanta integrasi:

$$\int{\frac{1}{2 \left(x - 2\right)} d x} = \frac{\ln{\left(\left|{x - 2}\right| \right)}}{2}+C$$

$$$\int \frac{1}{2 \left(x - 2\right)}\, dx = \frac{\ln\left(\left|{x - 2}\right|\right)}{2} + C$$$A