# 2280 exam keys old and new for Spring 2009

Today: Friday December 14: 00:58AM, 2018
Updated: Thursday April 30: 18:09PM, 2009

## 2280-1 Midterm and Final Exams S2009 (old exam references included)

1. Sample exams for S2009 are under construction. Check later for updated samples.
2. Midterm 1 for 2280 Spring 2009. Expect this sample to change, under construction.
S2009 Sample Midterm 1, Exam date Feb 25, 2009 (pdf).
Simon Williamson's Solutions for 2280 Midterm 1 Spring 2009
Solution Key for 2280 Midterm 1 Spring 2009
3. Midterm 2 for 2280 Spring 2009.
Solution Key for 2280 Midterm 2 Spring 2009
6. Midterm 2 version 1 [one problem was worked]. Solution key. Ans to 4(a) is a=0, b=2/3, c=0, d=-2/3. Solution corrected by Jennifer. Click here
7. Midterm 2 version 2 [four problem were worked]. Solution key. Click here

Old exams, for reference and study
S2006 Sample Midterm 1 (pdf).
Solution Key for 2280 Midterm 1 Spring 2006
Similar exams from previous 2250 courses, same topics
S2005 Sample 2250 Midterm 1, Exam date Feb 16 [old] (pdf).
S2005 Solution Key for 2250 7:30 Midterm 1 Spring 2005 [old]
S2005 Solution Key for 2250 10:45 Midterm 1 Spring 2005 [old]
Solution Key for 2250 7:30 Midterm 1 Fall 2005 [old]
Solution Key for 2250 10:45 Midterm 1 Fall 2005 [old]
4. Midterm 2 for 2280 Spring 2009. Expect this sample to change, under construction.
S2009 Sample Midterm 2, problems only, Exam date March 25, 2009 (pdf).
Old exams, for reference and study
S2006 Sample Midterm 2 with answers and solution outlines (pdf).
Solution Key for 2280 Midterm 2 Spring 2006
5. Midterm 3 for 2280 Spring 2009. Expect this sample to change, under construction.
S2009 Sample Midterm 3, Exam date April 24, 2009 (pdf).
Solutions to pass one of exam 3 on 22 April are available here:
Exam 3 answers, 22 April 2009, Version 1
Wood, Harris and Young discovered a wrong answer in (4b), correct answer is x(t)=exp(2t)-exp(t), y(t)=0.
Solutions to pass two of exam 3 on 29 April are available here:
Exam 3 answers, 29 April 2009, Version 2
Old exams, for reference and study
S2006 Sample Midterm 3, Exam date 27 April 2006 (pdf).
6. Sample Final Exam for 2280 Spring 2009. Changed 30 April.
S2009 Sample Final Exam, Exam date May 6, 2009, 7:30am-10:00am (pdf).
Old exams, for reference and study
S2006 Sample Final Exam, reference (pdf).
Solution Key for 2280 final exam Spring 2006 (pdf)