# Precal exam in 4 hours and stuck on a partial sum problem

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• December 18th 2009, 12:31 AM
lukestheboy
Precal exam in 4 hours and stuck on a partial sum problem
Sorry, first post here, try my best!

a_n=log((n+5)/(n+6))

I understand how to do partial sums and all but throwing a log in there has stopped me in my tracks. Please help!
• December 18th 2009, 02:07 AM
mr fantastic
Quote:

Originally Posted by lukestheboy
Sorry, first post here, try my best!

a_n=log((n+5)/(n+6))

I understand how to do partial sums and all but throwing a log in there has stopped me in my tracks. Please help!

Since $\log \frac{n + 5}{n + 6} = \log (n + 5) - \log (n + 6)$ the partial sum will simplify to only two terms.