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Math Help - Infinite Intersection

  1. #1
    Junior Member
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    Infinite Intersection

    I'm just wondering if my answer is correct:

    All the questions are asking for the infinite intersection of n from 1 to infinity of the following intervals:

    a. [-1/n,1/n]

    b. [-1/n,infinity)

    c. (-1/n,infinity)


    My answer:
    a. {0}
    b. [0,infinity)
    c. [0,infinity)

    I'm not sure if b and c have the same answer :/
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  2. #2
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    Quote Originally Posted by TitaniumX View Post
    All the questions are asking for the infinite intersection of n from 1 to infinity of the following intervals:
    a. [-1/n,1/n]
    b. [-1/n,infinity)
    c. (-1/n,infinity)

    My answer:
    a. {0}
    b. [0,infinity)
    c. [0,infinity)
    Looks good to me.
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  3. #3
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    Thanks for double checking
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