Jawab:d. 13-5n
Penjelasan dengan langkah-langkah:
Suku ke-n dari{8, 3,...}suku pertama (a) = 8beda = 3-8 = -5beda (b) = -5
Un = a+(n-1)bUn = 8+(n-1)-5Un = 8-5n+5Un = 13-5n (opsi d)
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Jawab:
d. 13-5n
Penjelasan dengan langkah-langkah:
Suku ke-n dari
{8, 3,...}
suku pertama (a) = 8
beda = 3-8 = -5
beda (b) = -5
Un = a+(n-1)b
Un = 8+(n-1)-5
Un = 8-5n+5
Un = 13-5n (opsi d)
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