Question

As funções f(x)=x-6 e g(x)=2x-8 determine f-¹ (x).

Answer 1

f(x)=x-6 e g(x)=2x-8 determine f-¹ (x). 

f(x)=x-6

f(x)=x-6 ==> x  = f-¹ (x) - 6 ==> f-¹ (x) = x + 6
========================================================
g(x)=2x-8 

f(x)=x-6 ==> x  = 2f-¹ (x) - 8 ==> f-¹ (x) = x + 8
                                                                   2