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26 September, 22:42

4. If f (x) = 9x + 1, find f-1 (f (3)).

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Answers (1)
  1. 26 September, 23:03
    0
    -224

    Step-by-step explanation:

    let x be - 1 and 3

    when x = - 1

    f (-1) = 9 (-1) + 1

    = - 8

    when x = 3

    f (3) = 9 (3) + 1

    = 28

    therefore, f-1 (f (3)) = (-8) (28)

    = - 224
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