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Thread: Need Help with some discrete math problems please

  1. #1
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    Need Help with some discrete math problems please

    Problem 1
    Consider the following relation r on the set Z: (x,y) belongs to r if and only if x+y is an even number. Find if this relation is
    a) Reflexive Answer:
    b) Symmetric Answer:
    c) Transitive Answer:
    d) Equivalence relation Answer:




    Problem 2

    Consider the following sets:
    X1 = Matn(Z), X2=Z15 , X3 =Z15, X4 = Cartesian product of R and Z
    Which of the following sets has the same cardinality as cardinality of N?



    Problem 3
    Calculate 2-1 + 3-1 in Z5



    Problem 4
    Present truth table for the function f(x,y) = (x + y)x + y




    Problem 5
    Using truth table prove that xy +x = x
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  2. #2
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    Re: Need Help with some discrete math problems please

    Quote Originally Posted by patman231231 View Post
    Problem 1
    Consider the following relation r on the set Z: (x,y) belongs to r if and only if x+y is an even number. Find if this relation is
    a) Reflexive Answer:
    b) Symmetric Answer:
    c) Transitive Answer:
    d) Equivalence relation Answer:

    Problem 2
    Consider the following sets:
    X1 = Matn(Z), X2=Z15 , X3 =Z15, X4 = Cartesian product of R and Z
    Which of the following sets has the same cardinality as cardinality of N?

    Problem 3Calculate 2-1 + 3-1 in Z5

    Problem 4
    Present truth table for the function f(x,y) = (x + y)x + y

    Problem 5 Using truth table prove that xy +x = x
    This is not a homework service. You do realize that do you not?
    So what is the reason for simply posting a list of problems?
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