# lec-2 - Midterm 1 is early. I Before drop date. I Before...

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Unformatted text preview: Midterm 1 is early. I Before drop date. I Before most other midterms in CS. CS70: Lecture 2. Outline. 1. Propositions. 2. Propositional Forms. 3. Implication Again. 4. Wasons Experiment 5. Truth Tables 6. Quantifiers Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 2+2 = 3 826th digit of pi is 4 Johny Depp is a good actor Every even number > 2 is sum of 2 primes x + x 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 826th digit of pi is 4 Johny Depp is a good actor Every even number > 2 is sum of 2 primes x + x 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 Proposition 826th digit of pi is 4 Johny Depp is a good actor Every even number > 2 is sum of 2 primes x + x 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 Proposition 826th digit of pi is 4 Proposition Johny Depp is a good actor Every even number > 2 is sum of 2 primes x + x 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 Proposition 826th digit of pi is 4 Proposition Johny Depp is a good actor Not a Proposition Every even number > 2 is sum of 2 primes x + x 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 Proposition 826th digit of pi is 4 Proposition Johny Depp is a good actor Not a Proposition Every even number > 2 is sum of 2 primes Proposition x + x Not a Proposition. 4 + 5 Propositions: Statements that are true or false. 2 is irrational Proposition 2+2 = 4 Proposition 2+2 = 3 Proposition 826th digit of pi is 4 Proposition Johny Depp is a good actor Not a Proposition Every even number > 2 is sum of 2 primes Proposition x + x Not a Proposition. 4 + 5 Not a Proposition. Propositional Forms. Conjunction: P Q Disjunction: P Q Implication: P = Q or P Q not (2 + 2 = 4) a new statement that is false... 2 + 2 = 3 and 2 + 2 = 4 a new statement that is false Propositional Forms.... I You will do the homework or you will regret it. Propositional Forms.... I You will do the homework or you will regret it. P Q P = You will do the homework. Q = You will regret it. Propositional Forms.... I You will do the homework or you will regret it. P Q P = You will do the homework. Q = You will regret it. I My name is Satish and I love math. Propositional Forms.... I You will do the homework or you will regret it. P Q P = You will do the homework. Q = You will regret it. I My name is Satish and I love math....
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## This note was uploaded on 02/29/2012 for the course COMPSCI 70 taught by Professor Rau during the Fall '11 term at University of California, Berkeley.

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lec-2 - Midterm 1 is early. I Before drop date. I Before...

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