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Adnan
Adnan asked in Education & ReferenceHomework Help · 9 years ago

Find next two terms of each sequence: 8,-4,2,-1?

please give full explanation

3 Answers

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  • s. k
    9 years ago

    I think the sequence is dividing by -2. Because of that, the next two terms would be 1/2, and then -1/4

  • Zeta1
    Lv 6
    9 years ago

    if n starts at zero then the formula is s_n = (-1)^n * 2^(3-n)

    the (-1)^n will alternate +1, -1 , +1, -1

    for n = 4, 1/2 and for n = 5, -1/4

  • Aaron
    9 years ago

    Looks to me like the number decreases by a half each time, and is alternately positve and then negative?

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