Matematika

Pertanyaan

barisan geometri 8,16,32,64
tentukan a.rasio
b.U6

2 Jawaban

  • a. rasio/ r = U2/U1
                     = 16/8
                     = 2
    b. U6 = ar⁵
              = 8. (2)⁵
              = 8. 32
              = 256
  • Jawaban
    _______

    ∵ Barisan Geometri => 8,16,32,64

    (A) Rasio => r = 16/8 = 2

    (B) U6 = ar^n-1
                = 8.2^5
                = 8.32
                = 256.


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