Which of the following could be the result of applying one of the identity laws

Question

Which of the following could be the result of applying one of the identity laws to the statement: b -> (b v F)
Identity laws:
p ? T ? p
p ? F ? p

(Laws are also conveniently listed on the Awesome Formula Sheet. Note that we use F where Epp uses c and T where Epp uses t to avoid confusion with variables named c or t.)

WISDOM OF THE AGES: Equivalence laws are cool! (1) You can apply them to just part of a logical statement (a subexpression). (2) You can also "line up" variables in a law to whole subexpressions of the statement you're working with. The key is to ensure that anywhere a variable appears in a law, it matches exactly the same variable/subexpression in your statement. (3) Finally, you can match either the left or right side of an equivalence law to your statement. (They work both directions.)



1. b -> F

2. b -> b

3. F -> b

4. b -> T

5. None of these

Explanation / Answer

1

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