Cauchy sequences

[fatboy]

I am having trouble understanding Cauchy sequences.
Can someone explain them and give a couple of concrete examples?

 

[stapel]

I'm sorry, but we really can't teach classes here. Please reply with the specific exercise with which you are having difficulty, or else please confirm that you are requesting online instruction, and we can see if we can find anything online that looks like it might be helpful.

Thank you.

Eliz.

 

[fatboy]

Cauchy

In R prove the sequence is Cauchy, and
*therefore* it converges.

1, 1+1, (1+1/2)^2, (1+1/3)^3, (1+1/4)^4, ...