suku ke-18 dari barisan geometri 3, 6, 12, ... adalah
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Jawaban:
a = 3
a = 3r = 6 / 3 = 2
a = 3r = 6 / 3 = 2Un = a.rⁿ⁻¹
a = 3r = 6 / 3 = 2Un = a.rⁿ⁻¹U8 = 3 . 2⁸⁻¹
a = 3r = 6 / 3 = 2Un = a.rⁿ⁻¹U8 = 3 . 2⁸⁻¹U8 = 3 . 2⁷
a = 3r = 6 / 3 = 2Un = a.rⁿ⁻¹U8 = 3 . 2⁸⁻¹U8 = 3 . 2⁷U8 = 3 x 128
a = 3r = 6 / 3 = 2Un = a.rⁿ⁻¹U8 = 3 . 2⁸⁻¹U8 = 3 . 2⁷U8 = 3 x 128U8 = 384
Penjelasan dengan langkah-langkah:
semoga membantu
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