Spring '07

# Spring '07 - Math 13 Tufts University Department of...

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Tufts University Math 13 Department of Mathematics February 22, 2007 Exam 1 This exam consists of 10 problems which are not necessarily in increasing order of di±culty. Show all your work, explain, simplify, and box all your answers. Except for problems 1 and 10, an answer without an explanation will receive no credit . No calculators, notes, or books are allowed on this exam. You are required to sign your exam book. With your signature you are pledging that you have neither given nor received assistance on this exam. Students found violating this pledge will receive an F in the course. 1. (10 points) True or False? Do not explain your answers in this problem. (a) The planes 2 x + 4 y 2 z = 4 and x + 2 y z + 7 = 0 are parallel. (b) The lines given by the equations x = 2+ 3 t,y = 1 t,z = 3 t and x = 3+ t,y = 2 t 1 ,z = 2 t intersect at the point ( 1 , 0 , 4). (c)

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Spring '07 - Math 13 Tufts University Department of...

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