Asked by temidayo
find the sum of the geometric series using a formula 1-4+16-64+256-1024
Answers
Answered by
Reiny
a = 1 , r = -4
you are showing 6 terms, so
sum(6) = a(r^6 - 1)/(r-1)
= 1((-4)^6 - 1)/(-4-1)
= 4095/-5
= -819
you are showing 6 terms, so
sum(6) = a(r^6 - 1)/(r-1)
= 1((-4)^6 - 1)/(-4-1)
= 4095/-5
= -819
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