Answer:
Its the first choice.
Step-by-step explanation:
f(x) = 3^(x-1)
log₃ f(x) = (x-1)log₃ 3 log₃ 3 = 1 , so:-
log₃ f(x) = x - 1
x = log₃ f(x) + 1 Replace x by f-1(x) and f(x) by x, so:-
f-1(x) = log₃ x + 1
