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Alex Stoica
user (0)
Pe: 2018-07-03T11:48:15+03:00 In: In:

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Ma poate ajuta cineva la aceste exercitii. Multumesc!

https://imgur.com/a/9yW6yJC

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3 raspunsuri

  1. ghioknt
    profesor

    Alex Stoica post_id=111691 time=1530618495 user_id=22752 wrote:
    Ma poate ajuta cineva la aceste exercitii. Multumesc!

    https://imgur.com/a/9yW6yJC

    Dar asta, te poate ajuta?
    0<x_n<\sum_{k=0}^{n}\frac{C_n^k}{n2^n}

  2. Felixx
    veteran (III)

    ghioknt post_id=111694 time=1530640589 user_id=18683 wrote:
    [quote=Alex Stoica post_id=111691 time=1530618495 user_id=22752]
    Ma poate ajuta cineva la aceste exercitii. Multumesc!

    https://imgur.com/a/9yW6yJC

    Dar asta, te poate ajuta?
    0<x_n<\sum_{k=0}^{n}\frac{C_n^k}{n2^n}

    Unde \sum_{k=0}^{n}C_{n}^{k}=2^{n}
    Raspuns corect A)

  4. Alex Stoica
    user (0)

    ghioknt post_id=111694 time=1530640589 user_id=18683 wrote:
    [quote=Alex Stoica post_id=111691 time=1530618495 user_id=22752]
    Ma poate ajuta cineva la aceste exercitii. Multumesc!

    https://imgur.com/a/9yW6yJC

    Dar asta, te poate ajuta?
    0<x_n<\sum_{k=0}^{n}\frac{C_n^k}{n2^n}

    Multumesc frumos. Imi puteti explica cum ajungem la astfel de inegalitati ?

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