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anonymous

  • one year ago

Which of the following is aub?

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  1. anonymous
    • one year ago
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    |dw:1442378130630:dw|

  2. anonymous
    • one year ago
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    {0,1,3,6,8) {2,4} {0,1,2,3,4,6,8

  3. anonymous
    • one year ago
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    Please explain.

  4. anonymous
    • one year ago
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    @jim_thompson5910

  5. jim_thompson5910
    • one year ago
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    I'm guessing that the A is near the circle on the left, so it's the left circle set similar for B, but for the other circle A u B is the set of things in either A or B or both so just list everything in either circle or both circles

  6. jim_thompson5910
    • one year ago
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    |dw:1442292482543:dw|

  7. jim_thompson5910
    • one year ago
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    |dw:1442292498651:dw|

  8. jim_thompson5910
    • one year ago
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    the U stands for Union `A u B` means `A or B`

  9. anonymous
    • one year ago
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    its would be the last answer then? {0,1,2,3,4,6,8}

  10. jim_thompson5910
    • one year ago
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    yep

  11. anonymous
    • one year ago
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    Think you could help me with one more?

  12. jim_thompson5910
    • one year ago
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    sure

  13. anonymous
    • one year ago
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    A= {0,1,2,3,4};B={2,4,5,8} Which set is AUB? 2,4 0,1,3,6,8 1,2,3,6,8,

  14. jim_thompson5910
    • one year ago
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    wait, did you mean \(\LARGE A \cup B\) or \(\LARGE A \cap B\) ??

  15. anonymous
    • one year ago
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    I think its the second one! sorry..

  16. jim_thompson5910
    • one year ago
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    no worries what numbers are in BOTH sets at the same time?

  17. anonymous
    • one year ago
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    none?

  18. anonymous
    • one year ago
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    well 2 and 4?

  19. jim_thompson5910
    • one year ago
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    yeah so \(\LARGE A \cup B = \{2,4\}\)

  20. jim_thompson5910
    • one year ago
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    oops, wrong symbol I meant to say \(\LARGE A \cap B = \{2,4\}\)

  21. anonymous
    • one year ago
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    Whats the difference between the upside down U? Like what does it stand for?

  22. jim_thompson5910
    • one year ago
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    it means "intersection" it's the middle portion that the two circles overlap on |dw:1442293207823:dw|

  23. anonymous
    • one year ago
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    Oh thanks so much!

  24. jim_thompson5910
    • one year ago
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    so let's fill out the circles if A= {0,1,2,3,4};B={2,4,5,8} |dw:1442293257104:dw|

  25. jim_thompson5910
    • one year ago
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    A u B would be everything in either circle it's the A u B = A or B |dw:1442293297759:dw|

  26. jim_thompson5910
    • one year ago
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    basically you can pick any number from either set

  27. jim_thompson5910
    • one year ago
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    \[\Large A \cap B = \text{ A and B}\] so the number has to be in BOTH |dw:1442293348446:dw|

  28. anonymous
    • one year ago
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    That sure makes it look easy! Thanks for the help")

  29. jim_thompson5910
    • one year ago
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    no problem

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