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anonymous

  • one year ago

help plzzz!

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  1. leoh1998
    • one year ago
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    with

  2. anonymous
    • one year ago
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    http://prntscr.com/8mj00r

  3. anonymous
    • one year ago
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    @ganeshie8

  4. Michele_Laino
    • one year ago
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    set \(A \cup B\) is composed by all elements which belong to A and all elements which belong to B, common elements are taken only one time

  5. anonymous
    • one year ago
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    so would my answer be {3,12}?

  6. Michele_Laino
    • one year ago
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    no, because the set {3,12} is the intersection between A and B

  7. Michele_Laino
    • one year ago
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    the right definition is: an element, say x, belongs to \(A \cup B\) if x belongs to A or x belongs to B

  8. Michele_Laino
    • one year ago
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    for example: 8 belongs to A, so 8 belongs to \(A \cup B\)

  9. anonymous
    • one year ago
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    is it a?

  10. Michele_Laino
    • one year ago
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    graphically speaking, we can make this drawing: |dw:1443705906364:dw|

  11. Michele_Laino
    • one year ago
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    that's right! it is option a

  12. anonymous
    • one year ago
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    thank u

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