Question

Encontre a função inversa de f(x)= 4x-1

Answer 1

f(x) = y
 y = 4x - 1
4x = y - 1
x = y - 1/4
f^-1(x) = y = x - 1/4

Answer 2

f(x)=4x-1

y=4x-1
x=4y-1

x+1=4y
4y=x+1
y=x+1/4  →  f elevado a -1(x)=x+1/4