Penjelasan dengan langkah-langkah:
2, 5, 8, 11, ...
suku pertama (a) = 2
beda (b) = 3
rumus suku ke-n
Un = a + (n - 1) . b
Un = 2 + (n - 1) . 3
Un = 2 + 3n - 3
Un = 3n - 1
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Penjelasan dengan langkah-langkah:
2, 5, 8, 11, ...
suku pertama (a) = 2
beda (b) = 3
rumus suku ke-n
Un = a + (n - 1) . b
Un = 2 + (n - 1) . 3
Un = 2 + 3n - 3
Un = 3n - 1