Convergance of a series - showing limit is irrational
Hi guys
Question is above. So I've proven that series is convergant (2nd line) by using the fact that a_n < n, and that yields that the series is less than (1 + e) as n tends to infinity, hence converges (by comparison test).
Now, the next part is where I am stuck. Using the conditions they give, I can only show the series is less than a finite value (that is irrational).... but that doesn't help proving it's irrational itself.
Any help is much appreciated.
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