Last edited by jut; September 19th 2009 at 06:32 PM.
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Hello, jut! Simplify: . We have: . This is a geometric series with: . Its sum is: .
Wow, nice Soroban!
Originally Posted by Soroban Hello, jut! Its sum is: . [/size] One more question: if a=e, and b=-2, I could plug that into the above result and it would be correct?
Originally Posted by jut One more question: if , and , I could plug that into the above result and it would be correct? sure, as long as , because it is a finite sum! In the case , you get .
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