Math 255 Midterm Exam I
Oct 4, 2010
Duration: 50 minutes
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Do not open this test until instructed to do so! This exam should have 5 pages,
including this cover sheet. It is a closed book exam; no textbooks, calculators
Math 255 Midterm Exam II
Oct 25, 2010
Duration: 50 minutes
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Do not open this test until instructed to do so! This exam should have 7 pages,
including this cover sheet. It is a closed book exam; no textbooks, calculato
Be sure this exam has 12 pages including the cover
The University of British Columbia
MATH 215/255, Sections 101105
Final Exam December 2009
Name
Signature
Student Number
Circle Section:
101 Liu
102 Tsai
103 Seon
104 Dridi
105 Smith
No notes nor calculato
Math 255 Midterm Exam III
Nov 19, 2010
Duration: 50 minutes
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Do not open this test until instructed to do so! This exam should have 8 pages,
including this cover sheet. It is a closed book exam; no textbooks, calculat
Math 255 Midterm Exam III
Nov 19, 2010
Duration: 50 minutes
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Do not open this test until instructed to do so! This exam should have 11 pages,
including this cover sheet. It is a closed book exam; no textbooks, calcula
Mid-Term 2 SOLUTIONS
(4 points) 1. (a) Find the general solution to the equation y 4y + 4y = 0.
The characteristic equation for the dierential equation is r2 4r + 4 = (r 2)2 = 0,
which has a double root at r = 2. It follows that the functions y1 (t) = te2
Mid-Term 1 SOLUTIONS
1. For each of the following initial value problems, determine the largest interval on which the
solution necessarily exists and is unique. Do not attempt to solve the initial value problems.
(5 points)
dy
+ (ln t)y = t2 , y(1) = 2.
d
Math 215/255 Midterm Exam II
Oct 25, 2010
Duration: 50 minutes
Last Name: m. First Name: _.. Student Number:
Circle the course in which you are registered: Math 215 or Math 255
Do not open this test until instructed to do so! This exam should have 7 pag
Math 215/255 Final Exam (Dec 2005)
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First name:
Student #:
Signature:
Circle your section #:
Burggraf=101, Peterson=102, Khadra=103, Burghelea=104, Li=105
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Instructions:
1. No notes