Exam1005F2008wAnswers

Exam1005F2008wAnswers - CARLETON UNIVERSITY FINAL...

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Unformatted text preview: CARLETON UNIVERSITY FINAL EXAMINATION December 2008 DURATION: 3 HOURS Department Name and Course Number: Mathematics and Statistics, MATH 1005F Course Instructor: Dr. A. Alaca PART I: Multiple Choice Questions. No partial marks. Circle the correct an- swer. [3] 1. What is the orthogonal trajectories of the family of curves y = ke x ? (a) y 2 x = c (b) y 2 + 2 x = c (c) y + x 2 = c (d) y + 2 x 2 = c (e) y 2 + x 2 = c [3] 2. If y is the solution of the initial value problem y = 2 xy; y (0) = 1 ; what is y (1) ? (a) e (b) e 1 (c) e (d) e 2 (e) 2 e [3] 3. Let y 00 6 y + 8 y = e 4 x . Which of the following is an appropriate form of a particular solution y p when using the method of undetermined coecients? (a) y p = Ae 4 x (b) y p = Axe 4 x (c) y p = Ax 2 e 4 x (d) y p = ( Ax + B ) e 4 x (e) y p = Ae 4 x + Be 4 x [3] 4. What is the general solution of x 2 y 00 + 5 xy + 5 y = 0, x > 0?...
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This note was uploaded on 10/16/2009 for the course MATH math1005 taught by Professor Someone during the Winter '08 term at Carleton CA.

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Exam1005F2008wAnswers - CARLETON UNIVERSITY FINAL...

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