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anonymous
 one year ago
Find S12 for the series 1 + 2 + 4 + 8 +..
i got 2048
anonymous
 one year ago
Find S12 for the series 1 + 2 + 4 + 8 +.. i got 2048

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino am i right

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1here we have a geometric series, whose first term is a1=1 and constant q= 2

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so, we can apply this formula: \[\Large {S_{12}} = {a_1}\frac{{1  {q^{12}}}}{{1  q}}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1after a substitution, i get this: \[\Large {S_{12}} = {a_1}\frac{{1  {q^{12}}}}{{1  q}} = 1 \cdot \frac{{1  {2^{12}}}}{{1  2}} = ...?\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0nvm ur right, typo sorry lol
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