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Logic

Logic. By David And Garry Do Now: Pay attention to what we are about to say and don’t interrupt until we are finished explaining. The  conjunction and  disjunction Signs. A conjunction is true only when both premises are true. A disjunction is true when at least one premise is true.

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Logic

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  1. Logic By David And Garry Do Now: Pay attention to what we are about to say and don’t interrupt until we are finished explaining.

  2. The conjunction and disjunctionSigns

  3. A conjunction is true only when both premises are true. • A disjunction is true when at least one premise is true.

  4. The ~negation Sign

  5. The negation of P is the opposite of P and the negation of Q is the opposite of Q.

  6. The →conditional Symbol

  7. A conditional is false only when P is true and Q is false. In all other cases, its true.

  8. The ↔biconditional Symbol

  9. The biconditional symbol is only true when both P and Q are the same.

  10. Hw [= • (P -> Q) <-> (~P v Q) • (~P v Q) -> (P v Q) • (~Q v P) -> (Q ~P) • ( Q -> P) <-> ( P -> Q) • (~Q -> ~P) <-> ( ~P -> ~Q)

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