hitung jumlah deretgeometri berikut!!! 2+10+50+...( 6suku )...
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Penjelasan dengan langkah-langkah:
[tex]a = 2 \\ \\ \frac{u(2)}{u(1)} = r \\ \frac{10}{2} = r \\ r = 5 \\ \\ s(6) = \frac{a( {r}^{6} - 1) }{r - 1} \\ s(6) = \frac{2( {5}^{6} - 1)}{5 - 1} \\ s(6) = \frac{2(15625 - 1)}{4} \\ s(6) = \frac{15624}{2} \\ s(6) = 7812[/tex]
