Răspuns:
: (f∘f)(x)=f(f(x))=3f(x)-2=
=3(3x-2)-2=9x-6-2=9x-8.
(g∘g)(x)= g(g(x))=2g(x)+1=
=2(2x+1)+1=4x+2+1=4x+3.
(f∘g)(x)=f(g(x))=3g(x)-2=
=3(2x+1)-2=6x+3-2=6x+1.
(g∘f)(x)=g(f(x))=2f(x)+1=
=2(3x-2)+1=6x-4+1=6x-3.
EXPLICAȚII:
Se dau funcțiile f,g:R->R, f(x)=3x-2, g(x)=2x+1.
C