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Math Help - value range

  1. #1
    Junior Member
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    value range

    Explain and indicate the amount of definition and value range for the function

    f(x) = (|x-5|)/(x-5) + 2 * ((|x-4|)(|x-6|))/((x-4)(x-6))

    definitionsmängen fick jag till:
    Df={x: x>4, x#5,6}=(4,5)U(5,6)U(6,infiniti)
    Vf=?
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  2. #2
    MHF Contributor FernandoRevilla's Avatar
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    Hint :

    If a\in\mathbb{R}-\{0\} then, |a|/a=1 or |a|/a=-1


    Fernando Revilla
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  3. #3
    MHF Contributor

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    In other words, paulaa, look at the specific intervals, 4< x< 5, 5< x< 6, and 6< x. With FernandoRevilla's suggestion, that should make it very easy.
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