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Rumus suku ke-n barisan bilangan 3, 6, 12, 24, ... adalah.....

  1. begin mathsize 14px style straight U subscript straight n equals 2 to the power of straight n minus 1 end exponent end style

  2. begin mathsize 14px style straight U subscript straight n equals 2.3 to the power of straight n minus 1 end exponent end style

  3. begin mathsize 14px style straight U subscript straight n equals 3.2 to the power of straight n minus 1 end exponent end style

  4. begin mathsize 14px style straight U subscript straight n equals 6 to the power of straight n minus 1 end exponent end style

M. Mariyam

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Pembahasan

a = begin mathsize 14px style straight U subscript 1 end style = 3

r = begin mathsize 14px style straight U subscript 2 over straight U subscript 1 equals 6 over 3 end style = 2

begin mathsize 14px style straight U subscript straight n equals straight a. straight r to the power of straight n minus 1 end exponent equals 3 straight space. straight space 2 to the power of straight n minus 1 end exponent end style

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