5 articles trouvés pour ce sujet.
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1+2+4+8....= -1 |
2012-04-02 |
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Andy pose la question :
In this minutephysics video, it's claimed that 1+2+4+8....= -1
Is this true, and if so, how?
< href="http://www.youtube.com/watch?v=kIq5CZlg8Rg">http://www.youtube.com/watch?v=kIq5CZlg8Rg
Robert Dawson lui répond. |
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Convergent or divergent? |
2009-03-03 |
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Betsy pose la question :
Use the ratio test to determine if the series is convergent or divergent.
1+1/2^2+1/3^3+1/4^4
I know the general terms are a(n)=1/n^n and a(n+1)=1/(n+1)^(n+1)
but I can't simplify r=lim(n->inf.)=n^n/(n+1)^(n+1)
Robert Dawson lui répond. |
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3-3+3-3+3.........up to infinite terms = ? |
2008-04-25 |
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Jatin pose la question :
3-3+3-3+3.........up to infinite terms = ?
Stephen La Rocque lui répond. |
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Sigma from 0 to infinity of (n^3 / 3^n) |
2006-11-15 |
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Cedric pose la question :
I'm wondering how you would find if this series converges or diverges?
Sigma from 0 to infinity of (n^3 / 3^n)
Does the n^3 dominate, or does the 3^n dominate? What about higher powers like n^10 / 10 ^ n ? Which one would dominate then?
Penny Nom lui répond. |
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Harmonic numbers |
2003-03-12 |
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Becky pose la question :
What can you tell me about the limit of harmonic numbers as it reaches infinity?
Penny Nom lui répond. |
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