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Thread: infinite series!

  1. March 19th 2012, 07:02 AM #1
    lawochekel
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    infinite series!

    18,2,2/9...............
    pls guys the equation above represent a series, have tried to obtain the nth term but no avail, can any help me here.

    appreciate!
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  2. March 19th 2012, 07:19 AM #2
    princeps
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    Re: infinite series!

    Quote Originally Posted by lawochekel View Post
    18,2,2/9...............
    pls guys the equation above represent a series, have tried to obtain the nth term but no avail, can any help me here.

    appreciate!
    a_n=2 \cdot 9^{(2-n)}
    Thanks from lawochekel
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