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Math Help - Reciprocal inequation with absolute value

  1. #1
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    Reciprocal inequation with absolute value

    Hi,

    I have problem with solving this:


    I factorise to:



    and then solving on 7 different intervals, where is 1th, 3th, 5th and 7th equal to (so it is irelevant) and 2th, 4th and 6th equal to .

    Set of solutions is:

    But it is wrong, because right solution is

    Can anyone tell me where I make mistake?
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  2. #2
    MHF Contributor
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    Re: Reciprocal inequation with absolute value

    Hey kotrfa.

    For your functions (without the absolute signs), which parts are positive and which parts are negative? (What you will do is basically take the negative parts and make them all zero since you have an absolute function).

    Then concentrate on the non-zero parts and compare those portions.
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