Barisan Dan DEreTAritmatika
Penjelasan dengan langkah-langkah:
jika 11 + 14 + 17 + . . . + 83a) banyak suku = na= 11b = 14 - 11 = 3Un = 833n + 8 = 833n = 75n = 25
b) jumlah deret
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Barisan Dan DEreT
Aritmatika
Penjelasan dengan langkah-langkah:
jika 11 + 14 + 17 + . . . + 83
a) banyak suku = n
a= 11
b = 14 - 11 = 3
Un = 83
3n + 8 = 83
3n = 75
n = 25
b) jumlah deret