Section 9.1-9.2

# Section 9.1-9.2 - (p q)•(r s p v r q v s CD absorption p...

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Section 9.1-9.2 Method deduction- breaking down and seeing if they manifest valid argument forms Need to be able to recognize certain argument forms (4 valid and 2 invalid in 8.7) Look these up Hypothetical syllogism P q, q r, p r HS Disjunctive syllogism P v q, ~p, q DS Modus ponens p q, p, q MP modus tollens p q, ~q, ~p MT Rule of inference- super common valid argument form Five More! Constructive Dilemma

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Unformatted text preview: (p q)•(r s), p v r, q v s CD absorption p q, p (p•q) abs simplification p•q, p simp conjunction p, q, p•q conj addition p, p v q add Example 1: (a•b) c, (a•b) [(a•b) • c] • absorption • p q, p (p•q) 13. (c v d) [(j v k) (j•k)], ~[(j v k) (j•k)], therefore ~(c v d) modus tollens p q, ~q, therefore p...
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## This note was uploaded on 03/16/2011 for the course PHIL 045 taught by Professor Hopper during the Fall '07 term at GWU.

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Section 9.1-9.2 - (p q)•(r s p v r q v s CD absorption p...

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