I am learning about negation but when it comes to the quiz its confusing because the only terms I learned through CC was "some" and "all" to learn how to negate. How do you negate terms besides these such as "if...then" situations?

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2 comments

  • Friday, Jul 19 2019

    The negation of a conditional statement is essentially saying "no" to the relationship. So if the conditional relationship is something like:

    If something is a dolphin then it is a mammal

    the negation of that statement is:

    There exists something that is a dolphin and not a mammal.

    Why is this the negation? Because if there was truly a conditional statement (which is a relationship between two statements) then we wouldn't have the sufficient condition and the absence of the necessary condition. If there was truly a conditional relationship any time we had the absence of the necessary condition we would have the absence of the sufficient condition (the contrapositive.)

    https://classic.7sage.com/lesson/advanced-negate-all-statements/

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  • Friday, Jul 19 2019

    I'm really not sure what you're asking. Are you asking how to negate an if-then relationship, as in taking the contrapositive?

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