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16 August, 19:02

If f (x) = log3 (x + 1), what is f-1 (2) ?

1

8

10

27

+3
Answers (2)
  1. 16 August, 20:40
    0
    The answer is 8 if I'm doing this right
  2. 16 August, 22:39
    0
    We are asked in the problem to determine f-1 (2) given the function f (x) = log3 (x + 1). The first step is to determine the inverse of f (x).

    f-1 (x):

    y = log3 (x+1)

    x = log3 (y+1)

    3^x = y + 1

    y = 3^x - 1

    if x = 2

    y = 8
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