Question

Найдите область значения функции

Answer 1

y=3-2^|x|,

2^|x|=3-y,

log_2 2^|x|=log_2 (3-y),

|x|=log_2 (3-y),

|x|>0,

 

{3-y>0,

{log_2 (3-y)>=0,

 

{-y>-3,

{3-y>=1,

 

{y<3,

{y<=2;

 

Ey=(-∞;2]

Наверное так