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Let's say Un=aqn and Sn=a+aq+aq2+aq3+aq4+aq5+...+aqn
Sn = a (1+q+q2+q3+q4+q5+...+qn)
A=(Sn/a) - q (Sn/a) = (1+q+q2+q3+q4+q5+...+qn) - q(1+q+q2+q3+q4+q5+...+qn)
A=1+q+q2+q3+q4+q5+...+qn-q-q2-q3-....-qn-qn+1=1-qn+1
So A = 1-qn+1 = Sn/a (1-q)
So Sn = a (1-qn+1)/(1-q)
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What is the sum of the infinite geometric series?
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1/8
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your face thermlscghe eugbcrubah
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How do you find the sum of a series of numbers?
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It is 58465.
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