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#1 2019-12-02 22:56:56

alex77
Member
Registered: 2019-12-02
Posts: 5

Applying the cauchy criterion when the series are not convergent

https://ibb.co/txRKdsp
And another example when the series are convergent but It is hard for me to solve it:
https://ibb.co/jV2zLTN

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#2 2019-12-04 06:13:47

alex77
Member
Registered: 2019-12-02
Posts: 5

Re: Applying the cauchy criterion when the series are not convergent

No one?

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#3 2019-12-05 19:22:00

George,Y
Member
Registered: 2006-03-12
Posts: 1,363

Re: Applying the cauchy criterion when the series are not convergent

(n+1)/(3n+2)

> (n+1)/(3n+3) = 1/3


(m-n) * 1/3 does not satisfy Cauchy Critirion

thus ∑1/3 is not convergent (even without using Cauchy Critirion)

How can  ∑(n+1)/(3n+2) , a larger one, converge?


X'(y-Xβ)=0

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