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Barisan dan Deret Geometri

Oleh Kartika Dwi A A 410080355. Barisan dan Deret Geometri. Pengertian Barisan Geometri Adalah barisan bilangan dimana hasil bagi dua suku yang berurutan tetap. Harga tetap itu disebut rasio “ r ”. Contoh:1, 2, 4, 8, …. atau.

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Barisan dan Deret Geometri

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  1. Oleh Kartika Dwi A A 410080355 Barisan dan Deret Geometri

  2. Pengertian Barisan Geometri Adalah barisan bilangan dimana hasil bagi dua suku yang berurutan tetap. Harga tetap itu disebut rasio “r”. Contoh:1, 2, 4, 8, …. atau

  3. Diketahui a,ar, ar2, ar3, … adalah barisan geometri. Jika digunakan pemisalan berikut U1 = a U2 = ar U3 = ar2 . . . Un = arn-1 jadi bentuk umum barisan geometri Un = arn-1 RumusSukuke-n dariBarisanGeometri

  4. RumusJumlah n SukuDeretGeometri (Sn) Deretgeometri: a + ar+ ar2 + ar3 +…+ arn-1 Kita hitungjumlah: Sn= a + ar+ ar2 + ar3 +…+ arn-1 rSn= ar + ar2+ ar3 + ar4 +…+ arn-1 +arn Sn–rSn = a - arn (1 –r) Sn = a (1 –rn)

  5. Contoh Carilah jumlah dari tujuh suku deret geometri: 1+3 + 9 + ….

  6. Pengertian barisan geometri Mencari rasio barisan geometri Menentukan Suku ke-n dari Barisan Geometri Menghitung Jumlah n Suku Deret Geometri (Sn) Rangkuman

  7. Tugas Buku paket hal. 101 Lat 3. 7 no 1- 5

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