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Math Help - Assignment Assistance

  1. #1
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    Assignment Assistance

    Hello;

    I have just started Discrete Math this week. I am watching Discrete Mathematics video via YouTube and still a little hazy on some of my assignment questions. I am reading the text in the chapter prior to starting my assignments and while gaining a little bit of knowledge; am still lost on some of these questions.

    "Rewrite each of the following statments so that it is clear that each is an implication." ***I am not sure if my thinking is accurate on this question.***
    (b) The product of rational numbers is rational. (My answer: "The product of irrational numbers is not rational.")

    "Write down the converse and the contrapositive of each of the following implications."
    (d) If n is an odd integer, then n2 + n - 2 is an even integer. (I did not write down an answer on this one. I have no idea what is being requested.)

    Thank you for any assistance. I apologize if this is basic questions; I am a little lost in this class.

    Regards,
    -RT
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  2. #2
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    Re: Assignment Assistance

    Quote Originally Posted by rtrumpow View Post
    "Rewrite each of the following statments so that it is clear that each is an implication." ***I am not sure if my thinking is accurate on this question.***
    (b) The product of rational numbers is rational. (My answer: "The product of irrational numbers is not rational.")
    FORGET Discrete Mathematics video via YouTube. That is a total waste of your time.

    And no, your thinking is not accurate on this question.
    To make an implication formal it should be in the if-then form.

    If each of a~\&~b is a rational number then a\cdot b is rational.

    Now it does not need to be exactly that. But that is the general idea.
    Thanks from topsquark
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  3. #3
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    Re: Assignment Assistance

    Thanks for the assistance and correction to my first question.
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  4. #4
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    Re: Assignment Assistance

    Quote Originally Posted by rtrumpow View Post
    "Write down the converse and the contrapositive of each of the following implications."
    (d) If n is an odd integer, then n2 + n - 2 is an even integer. (I did not write down an answer on this one. I have no idea what is being requested.)
    See Wikipedia about converse and contrapositive. However, it is better to read your textbook or lecture notes.
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