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19 October, 17:32

A sequence is defined recursively using the formula f (n + 1) = - 0.5 f (n). If the first term of the sequence is 120, what is f (5) ? i need answer as soon as possible!

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  1. 19 October, 17:58
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    7.5

    f (1) = 120

    f (2) = - 60

    f (3) = 30

    f (4) = - 15

    f (5) = 7.5
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