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Math Help - Set builder notations, exam #1 next thursday!

  1. #1
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    Set builder notations, exam #1 next thursday!

    hello i am working on this study guide for exam 1




    determine all the elements in each of the following sets.

    {n|0=(n-2)(3n+1)(n-4), n E N}
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  2. #2
    Senior Member jakncoke's Avatar
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    Re: Set builder notations, exam #1 next thursday!

    So all natural number solutions to  (n-2)(3n+1)(n-4) = 0 or n = 2 and n = 4, for  3n+1 = 0 means n =  \frac{-1}{3} which is not a natural number.

    so you have  \{2,4\}
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