Find the first 5 terms of the sequence A(n)=n+A(n-1) a1 = 3

Question

Find the first 5 terms of the sequence
A(n)=n+A(n-1) a1 = 3

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Thu Thảo 7 months 2021-07-21T01:52:23+00:00 1 Answers 2 views 0

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  1. Giakhanh
    0
    2021-07-21T01:53:32+00:00
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    Answer:

    A(1) = 3, A(2) = 5, A(3) = 8, A(4) = 12, A(5) = 17

    Step-by-step explanation:

    Given A(n) = n + A(n–1) a1 = 3.

    A(1) = 3.

    A(2) = (2) + A(2–1)

    = (2) + A(1)

    = (2) + (3) = 5

    A(3) = (3) + A(3-1)

    = (3) + A(2)

    = (3) + (5) = 8

    A(4) = (4) + A(4–1)

    = (4) + A(3)

    = (4) + (8) = 12

    A(5) = (5) + A(5–1)

    = (5) + A(4)

    = (5) + (12) = 17

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