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anonymous

  • 5 years ago

why does 1/x diverge while 1/x^2 converge and does 1/x^3 converge too?

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  1. anonymous
    • 5 years ago
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    Because x^-1 always makes an unfriendly number. Anything like x^-a where a > 1 will make friendly numbers which always converge.

  2. anonymous
    • 5 years ago
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    Do you know about p series? If you have a series of 1/(x^p), it is a p-series. Basically in a p-series, if p is greater than one, it converges, and if p is less than or equal to one, it diverges.

  3. anonymous
    • 5 years ago
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    thanks john i just wasnt quite sure. do u guys know the difference between a geometric and harmonic series? how do you id them thnks

  4. anonymous
    • 5 years ago
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    In a geometric series, \[\sum_{n=1}^{infty} 1/n\] Is a harmonic series, while \[\sum_{n=0}^{\infty} a1 * r^n \] Is a geometric series. A harmonic series is just a series with an increasing denominator with each term. A geometric series has a constant ratio between each term, r.

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