2004Spring20MidtermI

2004Spring20MidtermI - Name ID Midterm Exam I Math 20...

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Name: ID#: Midterm Exam I Math 20 Introduction to Linear Algebra and Multivariable Calculus 8 March 2004 Show all of your work. Full credit may not be given for an answer alone. You may use the backs of the pages or the extra pages for scratch work. Do not unstaple or remove pages. This is a non-calculator exam. Students who, for whatever reason, submit work not their own will ordinarily be required to withdraw from the College. —Handbook for Students In all situations where row operations are performed on a matrix, label each operation to receive partial credit in case of arithmetic mistakes.
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Problem Possible Points Number Points Earned 1 25 2 20 3 20 4 10 5 12 6 13 Total 100
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1 1 1. (25 Points) Let A = 1 2 - 1 - 1 ; B = 3 0 2 1 . Find the following: (i) 3 A + 2 B (ii) AB 1
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1 1 (iii) A 2 B T / 25 2
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2 2 2. (20 Points) Find the parametric form to the general solution of the system of linear equations 2 x 1 + 4 x 2 + x 4 = 2; x 1 + 2 x 2 + x 3 + 2 x 4 = 4; 3 x 1 + 6 x 2 + 2 x 3 + x 4 = 2 .
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