Respostas

  • Usuário do Brainly
2014-07-23T11:36:36-03:00
F(x)=ax+b
f(x+1)=a(x+1)+b
f(x+1)=ax+a+b
f(x+1)=3x-1

f(x+1)=f(x+1)

3x-1=ax+a+b

a+b=-1
3x=ax

a=3

3+b=-1
b=-4

f(x)=3x-4
f(2)=3.2-4
f(2)=2
2014-07-23T11:51:30-03:00


(X+1)=2

x=1

f(2)=3(1)-1 =   f(2)=2