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28 November, 20:57

Find the first six terms of the sequence.

a1 = - 7, an = 4 • an-1

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Answers (2)
  1. 28 November, 22:11
    0
    a1 = - 7

    a2=4 • - 7 = - 28

    a3=4 • - 28 = - 112

    a4=4 • - 112 = - 448

    a5=4 • - 448 = - 1792

    a6=4 • - 1792 = - 7168
  2. 29 November, 00:12
    0
    A1 = - 7

    an = 4 * an-1

    a2 = 4 * a (2-1) = 4 * a1 = 4 * - 7 = - 28

    a3 = 4 * a (3-1) = 4 * a2 = 4 * - 28 = - 112

    a4 = 4 * a (4-1) = 4 * a3 = 4 * - 112 = - 448

    a5 = 4 * a (5-1) = 4 * a4 = 4 * - 448 = - 1,792

    a6 = 4 * a (6-1) = 4 * a5 = 4 * - 1792 = - 7,168
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