hitunglah jumlah deret geometri 5/6 ( 5 per 6 ) - 5 + 30 - 180 + ....... ; s10=

diketahui a = 5/6 dan r = -6

[tex]sn = \frac{a( {r}^{n} - 1)}{r - 1} \\ s10 = \frac{ \frac{5}{6}( ( - 6)^{10 } - 1)}{ - 6 - 1} = \frac{ - 43190125}{6} [/tex]