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Thread: how to solve these two problems??

  1. #1
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    how to solve these two problems??

    Q-1. Let R be the relation on the set A = {1, 2, 3, 4} defined by aRb if and only if 2a > b + 1.
    a) List the ordered pairs in R.
    b) Find the matrix representing R.


    Q-7. Suppose that the relation R is defined on the set Z where aRb means a = b. Establish whether R is an equivalence relation giving your justifications.
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  2. #2
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    Re: how to solve these two problems??

    Quote Originally Posted by mehdi98 View Post
    Q-1. Let R be the relation on the set A = {1, 2, 3, 4} defined by aRb if and only if 2a > b + 1.
    a) List the ordered pairs in R.
    b) Find the matrix representing R.
    Q-7. Suppose that the relation R is defined on the set Z where aRb means a = b. Establish whether R is an equivalence relation giving your justifications.
    QI. a) $\{(2,1),(3,2)\cdots\}\subset\mathcal{R}$ you such fillout the other members.
    b) $\begin{array}{*{20}{c}} {}&1&2&3&4 \\ \hline {1|}&X&0&0&0 \\ {2|}&X&X&0&0 \\ {3|}&X&{}&{}&{} \\ {4|}&{}&{}&{}&{} \end{array}$ you need to use the correct symbols and complete the matrix.
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