Funktion $$$e \sin{\left(x \right)}$$$ integraali

Määritä $$$\int e \sin{\left(x \right)}\, dx$$$.

Sovella vakiokertoimen sääntöä $$$\int c f{\left(x \right)}\, dx = c \int f{\left(x \right)}\, dx$$$ käyttäen $$$c=e$$$ ja $$$f{\left(x \right)} = \sin{\left(x \right)}$$$:

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

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

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

Näin ollen,

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

Lisää integrointivakio:

$$\int{e \sin{\left(x \right)} d x} = - e \cos{\left(x \right)}+C$$

$$$\int e \sin{\left(x \right)}\, dx = - e \cos{\left(x \right)} + C$$$A