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4 cards from this section. Quick, good the night before a test.
What is the negation of p?
Think of the opposite of the statement represented by p.
Write the converse of p → q.
Just flip the order of the original implication.
What does the statement p ↔ q mean?
Think about when both conditions agree.
If p is false, what is the truth value of p → q?
Check the rules for implications.
Create a complex logical statement using at least three propositional variables. Write the statement out and then construct a truth table for it.
Use systematic methods for combining truth values.
Prove that (p → q) ∧ (¬q → ¬p) is logically equivalent to p ↔ q by showing both sides have the same truth values.
Detailed comparisons of truth values will help.
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