anonymous
  • anonymous
Could somebody explain what this sign means? (I'll draw it below.)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1359007073471:dw| (It has to do with inequalities, sets, and subsets)
anonymous
  • anonymous
for example: \[A \subseteq B\]
skullpatrol
  • skullpatrol
The set A is a subset of the set B or the same as the set B.

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anonymous
  • anonymous
discrete math indeed
anonymous
  • anonymous
hmm, and if it's just like this? \[A \subset B\] ?
skullpatrol
  • skullpatrol
Then the set A is a subset of the set B.
anonymous
  • anonymous
Ah, I see. And \[A \cup B \] ?
anonymous
  • anonymous
union
skullpatrol
  • skullpatrol
$$a \le b$$ compared to $$a< b$$
anonymous
  • anonymous
def: the union of the sets a and b, denote by A U B is the st that contain those elements that are either in a or in b , or both
anonymous
  • anonymous
Ah wait I'm still a bit confused. So if I'm asked: If A = {2, 4, 6, 8, 10} and B = {4, 8, 10}, then which of the following statements is false? 1) A ∩ B = B 2) B⊆B 3) A⊂B Then it would be 3 because A is not a subset of B, it is B that is a subset of A.. right?
anonymous
  • anonymous
u need to prove the three staments
anonymous
  • anonymous
No, I don't. I need to choose which one out of these (A ∩ B = B, B⊆B, and A⊂B) are false.
anonymous
  • anonymous
(1) {2, 4, 6, 8, 10} ∩ {4, 8, 10}
anonymous
  • anonymous
that a intersection
anonymous
  • anonymous
I'm lost :/
anonymous
  • anonymous
∩=intersection ∪= union
anonymous
  • anonymous
(1) {2, 4, 6, 8, 10} ∩ {4, 8, 10}= {4, 8, 10} true because is a intersection {2, 4, 6, 8, 10} ∪ {4, 8, 10}= {4, 8, 10} false is support to be equal to {2, 4, 6, 8, 10}
anonymous
  • anonymous
It's not A ∩ B = B because it's an intersection, nor B⊆B because {4, 8, 10} is the same as {4, 8, 10}.. so the one that's false is what I said earlier: A⊂B...
anonymous
  • anonymous
yes that false
anonymous
  • anonymous
the second one is also true
anonymous
  • anonymous
s⊆s or empty set ⊆ empty set
anonymous
  • anonymous
Thank you for you help (even though, honestly, it was very confusing...)
anonymous
  • anonymous
if u read the book u will understand it better
anonymous
  • anonymous
I didn't have a book. I have online schooling where they rarely give me well written lessons. (If I could just read the book I wouldn't be using OpenStudy.)
anonymous
  • anonymous
i don't know if this book good for you.i will give you name if wants to read it. Discretematics and its appliacation seven or six edition by kenneth H. Rosen
anonymous
  • anonymous
have a great day
anonymous
  • anonymous
Oh okay thank you! And you too!

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