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## Main Question or Discussion Point

one of example of cauchy sequence show that

= 1/n - 1/(n+k)

and In the above we have used the inequality

1/(n+m)^2 <= ( 1/(n+m-1) - 1/(n+m) ) => i don't under stand where this come from

and what is inequality? can you give other example?

= 1/n - 1/(n+k)

and In the above we have used the inequality

1/(n+m)^2 <= ( 1/(n+m-1) - 1/(n+m) ) => i don't under stand where this come from

and what is inequality? can you give other example?

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