Question

Dadas as funções reais f(x) = 2x + 4 e g(x) = x – 1, determine: a) f -1 o g-1 b) (g o f)-1

Answer 1

Resposta:

-1.(0)= 2x + 4 -1.(0)= x -1

0= 2x +4 0= x-1

-2x= 4 -x= -1 *(-1)

X=4/-2 x= 1

x= -2