Use problem 26 to calculate each sum (a) (b) In problem 26 Prove the following formula for
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(a)
(b)
In problem 26
Prove the following formula for a geometric sum
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1O 2 2 2 ar" = a + ar + ar+ , + ar"- = a, ar"+1
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Prove the following formula for a geometric sum 2 ar" = a + ar + ar+ , + ar"- = a, ar"+1
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