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anjali_pant Group Title

Show , lim x->0 ( sin 1/x) not equal to 0 use epsilon delta method

  • 2 years ago
  • 2 years ago

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  1. FoolForMath Group Title
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    it's lies in the interval -1,1 isn't ?

    • 2 years ago
  2. anjali_pant Group Title
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    nothing like that , prove by epsilon delta , thats all i know ! :p

    • 2 years ago
  3. FoolForMath Group Title
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    LOL!! Nice :))

    • 2 years ago
  4. anjali_pant Group Title
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    LOL ! :p

    • 2 years ago
  5. experimentX Group Title
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    http://www.wolframalpha.com/input/?i=lim+x-%3E0+%28+sin+1%2Fx%29 seems like undefined

    • 2 years ago
  6. anjali_pant Group Title
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    is the ans there at this link ?

    • 2 years ago
  7. experimentX Group Title
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    it says that limit is undefined

    • 2 years ago
  8. FoolForMath Group Title
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    it's DNE!! :D

    • 2 years ago
  9. anjali_pant Group Title
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    but is it explained ?

    • 2 years ago
  10. FoolForMath Group Title
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    Nopes.

    • 2 years ago
  11. anjali_pant Group Title
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    lol ! I also know the ans , but the prob is explanation ! :p

    • 2 years ago
  12. FoolForMath Group Title
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    This has a somewhat rigorous proof

    • 2 years ago
  13. FoolForMath Group Title
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    This is a simple way to understand:http://mathforum.org/library/drmath/view/53369.html

    • 2 years ago
  14. anjali_pant Group Title
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    really ???

    • 2 years ago
  15. FoolForMath Group Title
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    Yes really!! :D

    • 2 years ago
  16. anjali_pant Group Title
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    thnksss !!!!! :->>

    • 2 years ago
  17. FoolForMath Group Title
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    http://www.math.washington.edu/~conroy/general/sin1overx/

    • 2 years ago
  18. FoolForMath Group Title
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    Btw nice problem!

    • 2 years ago
  19. anjali_pant Group Title
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    I have many lyk these ! epsilon delta is really gettn on my nerves ! :p

    • 2 years ago
  20. FoolForMath Group Title
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    you are studying single variable or multivariate?

    • 2 years ago
  21. anjali_pant Group Title
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    both ! Actually in eco(h) , maths is subsi ! so its not core maths , but yea its maths , so bound to study ! :p

    • 2 years ago
  22. FoolForMath Group Title
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    lol, great :D :)) I wish I could help you more on epsilon delta proofs my current syllabus only requires to get the answer any how any ways ... so I tend to avoid rigorous stuffs.

    • 2 years ago
  23. anjali_pant Group Title
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    Lucky u ! :>

    • 2 years ago
  24. FoolForMath Group Title
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    lol, I have many many others things to study so not that :P

    • 2 years ago
  25. eliassaab Group Title
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    Hint if you take the sequence \[ x_n = \frac{2}{(2n+1)\pi}\] The sequence \[ x_n\] converges to zero but \[ \sin\left ( \frac 1{x_n} \right)=\pm 1\]

    • 2 years ago
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