Homework assigned in Math 242
for class discussion

Website: http://www.calpoly.edu/~dhartig/Pages/242/242hw.html
 

Section

Problems assigned
1.1
 A 2, 5, 8, 9, 13, B 1, 2
1.2
 A 3, 6, 7, 11, 14, 15, B 5, 6, 9, C 1
1.3
 A 2, 4, 5, B 2, 3, 6, 7, 11, C 1, 3, 4
2.1
 A 2, 5, 8, 9, 13, 15, 17(read the discussion of homogeneous first order odes),
B 2, 4, 5, 7, 9, C 2, 3, 5
2.2
 A 3, 6, 9, 12, 17, B 2, 3, 7, 10, 12, 13, C 1, 2
2.3
 A 2, 3, B 2, 5, 6, 7, C 1, 2

Group HW 1
due Friday, Jan 18

Solutions to graded problems

1.1 A 8, B 2
1.2 A 6, B 6, C 1
1.3 A 4, B 7, C 1
2.1 A 17, B 4, 5, C 2
2.2 A 6, 17, B 7, C 2
2.3 A 3, B 6, C 2

2.4 A 3, 5, 8, 9, 12, 13 (use isoclines); B 3, 4, 7
2.5 A 4, 5, 6, 13; B 3, 4, 5, 6; C 1, 3
2.6 A 2, 4, 5, 10, 12, 15; B 1, 3; C 1, 2
2.7 A 2, 4, 5; B 1, 3, 4; C 1, 2
Quiz 1
Friday, Jan 25
Chapters 1, 2, Solutions to Quiz 1

Problems for Practice
3.1 A 1, 3, B 7, 9
3.2 A 1
4.1 A 4, 6, 9, 10, 11; B 2, 6; C 2
4.2 A 3, 6, 7, 8; B 2, 4;
C 1 (Hint: The homogeneous equation has the general solution
x(t) = a cos(pi t) + b sin(pi t).)
4.3 A 4, 7, 8, 9, 12, 15; B 2, 4, 5, 6; C 5, 6
4.4 A 3, 5, 7, 8; B 1, 4, 5; C 1, 2
4.5 A 3, 6, 9; B 4, 5, 8; C 1, 2
4.6 A 2, 5, 8, 12, 15, 16; B 1, 3, 6; C 1, 2, 3

Group HW 2
due Friday, Feb 8

2.4 A 8, B 4
4.1 A 6, B 6
4.5 A 6, C 2

 2.5 A 6, B 6
4.2 A 8, B 4
4.6 A 8, B 6		 2.6 A 4, C 2
4.3 A 12, C 6

 2.7 A 4, B 4
4.4 A 8, B 4
4.7 A 2, 3, 6, 7; B 1, 2, 4 a, c, e, 5; C 1, 2
4.8 A 1, 2, 3; B 1, 2; C 1
Midterm 1
Week of Feb 11		 Chapters 1, 2, 4