E(y)=?у=5|sinx|-2

E(y)=?

у=5|sinx|-2

Ответ:

-1<=sin x<=1                        |  |*|

0<=|sin x|<=1                     | *5

0<=5|sin x|<=5                  | -2

-2<=5|sin x|-2<=3              

E(y)=[-2;5]

Источник: https://znanija.com/task/332368