Lembar Kerja Siswa

(Menemukan Rumus Jumlah Deret Geometri Tak Hingga)

Anggota Kelompok:

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Keterangan : 0<r<1

1. Perhatikan gambar diatas. Dengan menggunakan konsep kesebangunan dua buah segitiga (segitiga 1 dan segitiga 2), tentukan rumus jumlah deret geometri tak hingga dengan suku pertama 1 dan rasio r untuk 0<r<1

Jawaban:

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Untuk suku pertama adalah a dan rasio r untuk 0<r<1 maka rumus jumlah deret geometri tak hingga adalah…

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2. Buktikan rumus jumlah deret geometri tak hingga yang kalian temukan!

Jawaban:

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