What is the Limit of the Product of Roots as n Approaches Infinity?

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Discussion Overview

The discussion revolves around finding the limit of the product of terms of the form (1 - 1/√k) as n approaches infinity, specifically the expression (1 – 1/√2)(1 – 1/√3)…(1 – 1/√(n+1)). Participants explore the existence of this limit and its bounds.

Discussion Character

  • Exploratory, Mathematical reasoning, Debate/contested

Main Points Raised

  • One participant suggests that the limit exists between 0 and 1, based on the observation that each term is less than 1.
  • Another participant questions the reasoning by comparing the limit to a different product, (1 - 1/2)(1 - 1/3)…(1 - 1/n), implying that the original limit might be less than this comparison.
  • A third participant acknowledges a misunderstanding regarding the relationship between 1/√n and 1/n, leading to a realization that (1 - 1/√n) is indeed less than (1 - 1/n).

Areas of Agreement / Disagreement

Participants do not reach a consensus on the limit's value or its comparison to other products. Multiple competing views remain regarding the limit's existence and its bounds.

Contextual Notes

Some assumptions about the behavior of the terms as n approaches infinity are not fully explored, and the implications of the comparisons made are not resolved.

bobn
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Lt (1 – 1/√2)* (1 – 1/√3)…… (1 – 1/√n+1)
n->∞


There must some simple calculation to find this, but I cannot get this, limit exists since

each tern is less than 1, and limit is more than 0. so limit exists between (1 0).
 
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Hi bobn! :smile:
bobn said:
Lt (1 – 1/√2)* (1 – 1/√3)…… (1 – 1/√n+1)
n->∞

limit is more than 0 …

Why?

Isn't it less than limn->∞ (1 - 1/2)(1 - 1/3)…(1-1/n) ?
 
haa, I am stupid,

1/√n > 1/n implies, (1- 1/√n) < (1 - 1/n).
 
thx for reply tiny-tim
 

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