Respostas

2013-10-18T09:29:42-03:00
A) f(g(2))= 3(2²+1)= 3(5)+4= 15+4= 19

b) g(f(3))= (3(3)+4)²+1= (9+4)²+1= 13²+1= 169+1=170

c) f(f(-1))= 3(3(-1)+4)+4= 3(-3+4)+4=3(1)+4= 3+4=7