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10 February, 10:15

What is f (5) if f (1) = 3.2 and f (x + 1) = 5/2 (f (x)) ?

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  1. 10 February, 10:38
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    F (x + 1) = (5/2) * f (x)

    f (x + 1) = 2.5*f (x), f (1) = 3.2

    f (2) = 2.5f (1) = 2.5*3.2 = 8

    f (3) = 2.5f (2) = 2.5*8 = 20

    f (4) = 2.5f (3) = 2.5*20 = 50

    f (5) = 2.5f (4) = 2.5*50 = 125
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