Recent content by brookey86

  1. B

    Is n! Less Than (n+1)^n Simplifiable?

    I can see that i will always be less than n+1. But is there a way to compare the two without using the product summation symbol?
  2. B

    Is n! Less Than (n+1)^n Simplifiable?

    Homework Statement n! < (n+1)n I am not looking for a proof, just a way to simplify this equation mathematically. Homework Equations The Attempt at a Solution As far as I can see, I cannot simplify this any further. Is there something I can divide out of both sides, for example?
  3. B

    Are These Relations Reflexive, Antisymmetric, and Transitive?

    No, I think #2 would still be antisymmetric and transitive
  4. B

    Are These Relations Reflexive, Antisymmetric, and Transitive?

    With the way I wrote it no. But I actually made a typo, it should be w+x <= y+z AND w<=y. So I'd say yes
  5. B

    Are These Relations Reflexive, Antisymmetric, and Transitive?

    Homework Statement Are these two relations reflexive, antisymmetric, transitive? 1. (w,x)<=(y,z) iff w+x <= y+z 2. (w,x)<=(y,z) iff w+x <= y+z AND w<y Homework Equations The Attempt at a Solution 1. reflexive - yes; antisymmetric - no; transitive - yes; 2. reflexive -...
  6. B

    XRy: x has drawn a picture of y | what relations apply?

    Thank you for the help. I couldn't find any online texts that explained relations where uncertainty was involved.
  7. B

    XRy: x has drawn a picture of y | what relations apply?

    So it seems I'm correct with my reasoning above, except perhaps for asymmetric because x drawing y doesn't necessarily imply that y did not draw x.
  8. B

    XRy: x has drawn a picture of y | what relations apply?

    Homework Statement The relation xRy is defined as "x has drawn a picture of y". R is on the set of all people. Is this relation: reflexive, irreflexive, symmetric, asymmetric, antisymmetric, transitive ? Homework Equations What confuses me about this problem is that there is uncertainty...
  9. B

    Writing propositions symbolically

    Homework Statement For each positive int k, there are k consecutive pos ints that aren't perfect-squares. I'm trying to write this in symbolic logic, but am getting messed in the second part and might be a little off on the first. Homework Equations The Attempt at a Solution...
  10. B

    Is f-1(A ∪ B) the same as f-1(A) ∪ f-1(B)?

    I can prove it using words, not quite there using mathematical symbols, but that part is out of the scope of my class. Thanks guys!
  11. B

    Is f-1(A ∪ B) the same as f-1(A) ∪ f-1(B)?

    Homework Statement Homework Equations The Attempt at a Solution
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