HW1-W07-Full

# HW1-W07-Full - CS191 Homework One Winter 2007 Due Jan 30...

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CS191 Homework One Winter 2007 Due: Jan. 30, 2007, in class Section 1.1, p7 Determine whether each sentence in Exercises 1-8 is a proposition. If the sentence is a proposition, write its negation. (you are not being asked for the truth values of the sentences that are propositions.) Exercise (3) For some positive integer n , 19340 = n 17 __________________________________________________________________ Write the truth table of each proposition in Exercises 19-26 Exercise (26) ¬ ( p q ) ( ¬ q r ) ____________________________________________________________________ In exercises 36-40, formulate the symbolic expression in words using p: Today is Monday. q: It is raining. r: It is hot. Exercise (38) ¬ ( p q ) r _____________________________________________________________________ In exercises 47-52, represent the proposition symbolically by letting p: You heard the “Flying Pigs” rock concert. q: You heard the “Y2K” rock concert. r: You have sore eardrums. Exercise (51) You did not hear the “flying Pigs” rock concert and you did not hear the “Y2K” rock concert, but you have sore eardrums. _______________________________________________________________________ _ 1

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Section 1.2, p16 Assuming that p and r are false and that q and s are true, find the truth value of each proposition
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HW1-W07-Full - CS191 Homework One Winter 2007 Due Jan 30...

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