Definite Integral & Limit: Proving a Relation

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SUMMARY

The forum discussion centers on proving that the limit of the sum \(\lim_{n \rightarrow \infty} \sum \frac{n}{n^{2}+i^{2}}\) from \(i=1\) to \(n\) is a definite integral. Participants suggest using the transformation \(\frac{\frac{1}{n^2}}{\frac{1}{n^2}}\) to facilitate the proof. The discussion emphasizes the importance of determining the appropriate \(\Delta x\) for the limit to be expressed as a definite integral.

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Homework Statement


Show that each limit is a definite integral.
[tex]Lim (n \rightarrow \infty)[/tex] of [tex]\sum \frac{n}{n^{2}+i^{2}}[/tex] from [tex]i=1[/tex] to [tex]n[/tex]

Homework Equations


[tex]Lim (n \rightarrow \infty)[/tex] of [tex]\sum f(c)\Delta X[/tex] from [tex]i=1[/tex] to [tex]n[/tex]


The Attempt at a Solution



I can't really get this started, so any help at all would be great.

Thanks.
 
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Try multiplying by [tex]\frac{\frac{1}{n^2}}{\frac{1}{n^2}}[/tex].
 
What do you think [itex]\Delta x[/itex] should be?

(My hint is really the same as foxjwill's.)
 

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