ATTN: Reiny

How do you write in correct set notation?

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asked by Jen
  1. e.g.

    A = {2n-1 | n ∈ N} would give you all positive odd numbers.

    B = { 1,2,3,4} would be the set B containing the integers 1,2,3,4

    C = {x | -4 < x ≤ 5 , x ∈ R} would be the set of all real numbers between -4 and +5 excluding the -4 but including the +5

    in general if you know the elements of the set, enclose them in { } brackets
    the empty set or the null set is often written as Ø or {}

    hope this helps,

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    posted by Reiny

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