Matematika

Pertanyaan

barisan geometri harmonis a = 72,-24,8 tentukan suku ke 10

1 Jawaban

  • Barisan Geometri

    72, -24, 8, ...
    a = 72
    r = -24/72 = -1/3

    U10 = ar^9
    U10 = 72 . (-1/3)^9
    U10 = -8 . 3^2 . 3^-9
    U10 = -8 . 3^-7
    U10 = -8/2187

Pertanyaan Lainnya