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7 November, 13:02

F (1) = 3f (1) = 3 and f (n) = 2f (n-1) + 3

f (n) = 2f (n-1) + 3

then find the value of f (3)

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  1. 7 November, 13:07
    0
    f (3) = 21

    Step-by-step explanation:

    f (1) = 3

    f (n) = 2f (n-1) + 3

    n=2

    f (2) = 2f (2-1) + 3

    f (2) = 2f (1) + 3

    f (2) = 2*3+3

    f (2) = 6+3

    f (2) = 9

    n=3

    f (3) = 2f (3-1) + 3

    f (3) = 2f (2) + 3

    f (3) = 2*9+3

    f (3) = 18+3

    f (3) = 21
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