Question

se considera functiile f,g:R->R,f(x)=6-5x,g(x)=x+8 . sa se rezolve ecuatia (f o g)(x)=1

Answer 1

Din teorie stim ca: (f o g)(x)=f(g(x)).

(fog)(x)=1

f(g(x))=1

f(x+8)=1

6-5(x+8)=1

6-5x-40=1

-5x=1+40-6

-5x=35

x=7