find the inverse function of F informally

f(x) =3x

f¹(x) =(_________)

Verify thatf(f¹(x)) =x andf¹(f(x)) =x.

f(f¹(x))=f (___________)

=3(________)

=x

f¹(f(x))=f¹ (___________)

=3x/(_______)

=x