Matematika

Pertanyaan

Suku ke 10 dari 2,-1,-4,-7

2 Jawaban

  • a = 2
    b = - 1 - 2 = - 3
    U10 = a + 9b
    = 2 + 9(-3)
    = 2 - 27
    = - 25
  • a = 2
    b = -1 - 2 = -3

    Un = a + (n - 1)b
    U10 = 2 + (10 - 1)(-3)
    U10 = 2 + 9(-3)
    U10 = 2 - 27
    U10 = -25

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