Asked by fatma
Sum[(-1)^(n - 1) (7/9^(n - 1)),
{n, 1, Infinity}]
{n, 1, Infinity}]
Answers
Answered by
Steve
geometric series.
a = 1
r = -7/9
sum = 9/16
a = 1
r = -7/9
sum = 9/16
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