exam1sol

exam1sol - GRADING NAME e-mail address Please mark the box...

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e-mail address Please mark the box next to your recitation instructor’s name, and circle your recitation time. Recitation: s Youngmi Hur (2 pm, 3 pm) s Junecue Suh (12 pm, 1 pm) s Sunny Jung (1 pm, 2 pm) s Yuuji Tanaka (12 pm, 1 pm) s Kobi Kremnizer (2 pm, 3 pm) s Craig Van Coevering (2 pm, 3 pm) s Karl Mahlburg (10 am, 11 am) s erˆ ome Waldisp¨uhl (2 pm, 3 pm) s Pedro Reis (10 am, 11 am) GRADING 1. 2. 3. 4. 5. TOTAL 18.02 Exam 1 Friday, Sept 21, 2007 2:05 - 2:55 Directions: Do all the work on these pages; use reverse side if needed. Answers without accompanying reasoning may only receive partial credit. No books, notes, or calculators. Please stop when asked to and don’t talk until your paper is handed in. Problem 1. (15) Consider the three points A : (1 , 0 , 1), B : (2 , 1 , 3), C : ( 1 , 1 , 2). a) (8) Find the cosine of the angle between −−→ AB and −−→ AC . b) (7) Find a point
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exam1sol - GRADING NAME e-mail address Please mark the box...

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