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12 July, 22:27

Find the domain of the function f (x) = 2 / (8-9x)

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Answers (2)
  1. 12 July, 22:36
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    R/{8/9}

    The bottom cannot be equal to 8/9 or this makes the equation undefined.
  2. 12 July, 22:47
    0
    F (x) = 2 / (8-9x). This function is discontinued for the denominator value = 0

    So (8-9x) ≠ 0, or x≠ 8/9

    Hence the domain of f (x) = ]-∞, 8/9[ ∪ ] 8/9, + ∞[

    or domain is all real number ≠ 8/9
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