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2 November, 06:30

What is the explicit formula 0.5,-0.1,0.02,-0.004,0.0008

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  1. 2 November, 06:42
    0
    -0.1 / 0.5 = - 0.2

    0.02 / - 0.1 = - 0.2

    common ratio = - 0.2

    Geometric Sequence

    an = a1 r^ (n-1)

    an = 0.5 * - 0.2^ (n-1)
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