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Math Help - Series and Sequences

  1. #1
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    Series and Sequences

    Ok, first a really simple sequence, but for some reason this online page isn't accepting it.

    Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues.

    I'm putting in 5/(4^n) but it's not taking it. Either this input is messed up, or i'm missing something elementary.
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  2. #2
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    Try a_n=\displaystyle\frac{5}{4^{n-1}}.
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  3. #3
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    Ahh, yes. I was assuming n=0, but I guess I shouldn't assume anything
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