Funktion $$$\frac{1}{\csc{\left(x \right)}}$$$ integraali

Määritä $$$\int \frac{1}{\csc{\left(x \right)}}\, dx$$$.

Esitä integroituva funktio sinifunktion avulla.:

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

Sinifunktion integraali on $$$\int{\sin{\left(x \right)} d x} = - \cos{\left(x \right)}$$$:

$${\color{red}{\int{\sin{\left(x \right)} d x}}} = {\color{red}{\left(- \cos{\left(x \right)}\right)}}$$

Näin ollen,

$$\int{\frac{1}{\csc{\left(x \right)}} d x} = - \cos{\left(x \right)}$$

Lisää integrointivakio:

$$\int{\frac{1}{\csc{\left(x \right)}} d x} = - \cos{\left(x \right)}+C$$

$$$\int \frac{1}{\csc{\left(x \right)}}\, dx = - \cos{\left(x \right)} + C$$$A