Fall 2006 - Knutson's Class - Exam 1

Fall 2006 - Knutson's Class - Exam 1 - Prof. Allen...

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with answers Name: SID: If you have questions, come and ask me! I really really mean it!!! 1 [30%]. Let S be the set of students in the Knutson section of Math 109. Let T be the set of all teaching assistants at UCSD. For s S, t T , write t helps s if the student s can seek help from the TA t (in t ’s o±cial capacity). Next to each of the following statements, write True or False. 1. s S such that t T such that t helps s True 2. s S, t T, t helps s False 3. s S, t T such that t helps s True 4. t T such that s S, t helps s True 5. s S such that t T, t helps s False For each of the False statements above, explain in English what they’re asserting , expressed in a way that makes it obvious that they’re false. #2. Any student in this 109 class can legitimately seek help from any TA at UCSD. Not. #5. There’s a student in this class that can legitimately seek help from any TA at UCSD. Not. There were several people who misread the de²nition of S as “all students at UCSD”, and got #4 wrong because of that. (#4 is true: the TA in question is Ameera.) Many, many people did not properly follow the underlined text above (but got most credit anyway). 1
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Fall 2006 - Knutson's Class - Exam 1 - Prof. Allen...

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