223midterm20091

# 223midterm20091 - University of Toronto Department of...

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University of Toronto Department of Mathematics MAT223H1S Linear Algebra I Midterm Examination February 26, 2009 S. Fitzpatrick, S. Kudla, R. Ponge, S. Todorcevic, S. Uppal Duration: 1 hour 50 minutes Last Name: Given Name: Student Number: Tutorial Code: No calculators or other aids are allowed. FOR MARKER USE ONLY Question Mark 1 /8 2 /8 3 /8 4 /10 5 /10 6 /10 7 /6 TOTAL /60 1 of 8

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For each of the statements below, decide if it is true or false. Indicate your answer by shading in the box corresponding to your choice. Justify your answer by providing an appropriate proof or counter example. [4] 1(a) The space R 2 = ±² x y ³ | x, y R ´ is a subspace of R 3 . true false [4] 1(b) The set of solutions to the system x + 2 y - 3 z = 1 , 2 x + 3 y + 3 z = - 1 , 5 x + 9 y - 6 z = 2 . requires two parameters. true false 2 of 8
For each of the statements below, decide if it is true or false. Indicate your answer by shading in the box corresponding to your choice. Justify your answer by providing an appropriate proof or counter example. [4]

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## This note was uploaded on 04/10/2010 for the course MAT MAT223 taught by Professor Uppal during the Fall '09 term at University of Toronto.

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223midterm20091 - University of Toronto Department of...

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