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3 February, 14:48

What's the inverse of f (x) = 1/3x+2

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Answers (2)
  1. 3 February, 14:54
    0
    3x-6

    Step-by-step explanation:

    1. replace x with y

    so you get 1/3y+2=x

    2. solve whatever you get for y

    y=3x-6
  2. 3 February, 17:54
    0
    y = 3x - 6

    Step-by-step explanation:

    I think you meant f (x) = (1/3) x+2.

    1) replace "f (x) " with "y": y = (1/3) x+2

    2) interchange x and y: x = (1/3) y + 2

    3) solve this result for y. Multiply all three terms by 3: 3x = y + 6. Subtract 6 from both sides, obtaining y = 3x - 6.

    4) replace "y" with the symbol for inverse function:

    -1

    f (x) = 3x - 6
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