Verified answer

у=3^(х+1)-2,

3^(x+1)=y+2,

3^(x+1)=3^log_3(y+2),

x+1=log_3(y+2),

x=log_3(y+2)-1,

y+2>0,

y>-2,

Ey=(-2;+00)

у=5^(-2х-1)+4,

5^(-2х-1)=y-4,

5^(-2х-1)=5^log_5(y-4),

-2x-1=log_5(y-4),

-2x=log_5(y-4)+1,

x=-1/2log_5(y-4)-1/2,

y-4>0,

y>4,

Ey=(4;+00)