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Diketahui barisan geometri 4 3 ​ , 2 3 ​ , 3 , 6. Rumus suku ke-n barisan tersebut adalah...

Diketahui barisan geometri Rumus suku ke-n barisan tersebut adalah...

  1. 3 over 2.2 to the power of straight n

  2. 3 over 4.2 to the power of straight n

  3. 3 over 8.2 to the power of straight n

  4. 3 over 16.2 to the power of straight n

  5. 3 over 32.2 to the power of straight n

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N. Mustikowati

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

3 over 4 comma space 3 over 2 comma space 3 comma space 6  straight a equals fraction numerator begin display style 3 end style over denominator begin display style 4 end style end fraction semicolon space straight r equals fraction numerator begin display style 3 over 2 end style over denominator begin display style 3 over 4 end style end fraction equals 2  straight U subscript straight n equals ar to the power of straight n minus 1 end exponent  equals fraction numerator begin display style 3 end style over denominator begin display style 4 end style end fraction left parenthesis 2 right parenthesis to the power of straight n minus 1 end exponent equals fraction numerator begin display style 3 end style over denominator begin display style 4 end style end fraction. space 2 to the power of straight n. space 2 to the power of negative 1 end exponent equals fraction numerator begin display style 3 end style over denominator begin display style 4 end style end fraction. fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction. space 2 to the power of straight n  equals fraction numerator begin display style 3 end style over denominator begin display style 8 end style end fraction. space 2 to the power of straight n

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Diketahui barisan geometri dengan besar suku ke-4 adalah-4 dan suku ke-10 adalah − 16 1 ​ . Suku ke-8 barisan tersebut adalah ...

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