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-   -   Sequence euation (https://www.askmehelpdesk.com/showthread.php?t=552703)

  • Feb 8, 2011, 06:24 PM
    arbee
    sequence euation
    the givn is 3 -6 12 -24 find the sequence equation
  • Feb 8, 2011, 06:26 PM
    arbee
    what is the sequence equation of 3, -6, 12, -24
  • Feb 8, 2011, 07:39 PM
    jcaron2

    Each number is -2 times the previous. So you know it'll be something like

    ,

    where is the nth term and c is some constant that you have to figure out. It's simple enough to figure out what c is: just plug in the values for the first number.







    So



    or to simplify a little more



  • Feb 9, 2011, 06:46 AM
    galactus

    It is rather obvious that the numbers are multiples of 3.

    Try

    What's the next number?

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