|
Differential Equations
2250-4 home page
|
|
After the first week, homework assignments will be posted on Fridays, a week before they are due - you will have a weekly quiz based on the homework problems, lab work, and the concepts they test, at the start of class on Fridays. A subset of the weekly homework problems are underlined and bold-face, and you will hand in carefully written up solutions to this subset for grading, also at the start of class on Fridays.
homeworkguidelines.pdf for written homework (thanks to Victor Camacho).
Due August 30
hw1.pdf The section 1.3 homework has been postponed until next week; it is not due on August 30.
Sections_1.1-1.3.pdf of the text, for students who don't have the textbook yet.
hw1sols.pdf solutions
grading: 20 points, distributed as follows
1.1: 6 = 2 points, 27, 30, 34 = 1 point each, w1.1ab = 1 point each;
1.2: 6, 7, 16 = 2 points each; 26abc = 1 point each; 40, w1.2b = 2 points each.
Due September 5
lab1.pdf lab1sols.pdf
Due September 6
hw2.pdf
text1.3-1.5.pdf text sections, in case you don't have your text yet. There should also be copies of the text on reserve at Marriott Library.
Maple Introduction: Read the .pdf's of the notes below. Open Maple, and use the "open URL" menu item to open the actual Maple worksheets (*.mw), and work through the examples they contain. Try to modify the example commands and see if you get what you expect. There is nothing to hand in from this portion of your assignment.
mapleintro.pdf
mapleintro.mw
maplecommands.pdf
maplecommands.mw
hw2sols.pdf solutions
grading: 20 points, distributed as follows
1.3: 2 = 1 point, 13, 14, 23 = 2 points each, w2.1b = 1 point.
1.4: 4, 36, 49 = 2 points each.
1.5: 1, 8, w2.2 = 2 points each
Due September 12
lab2.pdf lab2sols.pdf
Due September 13
hw3.pdf
EP3.7.pdf supplemental electrical circuits section, for hw.
hw3sols.pdf solutions
grading: 20 points, distributed as follows
1.5: 33, 36a = 2 points each; EP3.7.2 = 2 points.
2.1: 6 = 3 points (2 points for solution, one for picture), 10, 12 = 2 points each; 23a = 1 point, 23b = 2 points, w3.1 = 1 point.
2.2: w3.2abc = 1 point each.
Due September 19
lab3.pdf lab3sols.pdf
Due September 20
hw4.pdf problems 2.4.4, 2.5.4, 2.6.4 are canceled. The Simpson's rule problem w4.1/4.2 is postponed until next week
hw4sols.pdf solutions
grading: 20 points, distributed as follows
2.3: 2a = 2 points, 2b = 1 point, 3, 9 = 2 points each, 10 = 4 points, 13, 14, 17 = 2 points each, 25abc = 1 point each.
Due September 26
lab4.pdf
numerics.m Matlab file to compute numerical solutions to first order DE IVP's.
commands.m common Matlab commands
http://www.youtube.com/watch?v=jTS5ZmrrzMs "Using Matlab for the first time" M.I.T. video, the first in a series at Youtube.
Due September 27
hw5.pdf and don't forget w4.1/4.2 from last week, which has been postponed to this homework.
hw5sols.pdf solutions
grading: 20 points, distributed as follows
3.1: w4.2a, 4, 16, 28 = 2 points each.
3.2: 20 = 2 points.
3.3: 34, w5.1 = 2 points each.
3.4 16, 32a,b = 2 points each.
Due Thursday October 3 at the start of your lab - because the first midterm exam is on Friday October 4. Note: This assignment was originally due on Wednesday.
hw6.pdf
hw6sols.pdf solutions
grading: 20 points, distributed as follows
3.5: w6.1ab = 2 points each, cd = 1 point each, e = 2 points; w6.2 = 3 points
3.6: 6 = 2 points, w6.3abc = 2 points each, e = 1 point.
Due October 3
lab5.pdf lab5sols.pdf
Due October 11
hw7.pdf
hw7sols.pdf solutions
grading: 20 points, distributed as follows
4.1: 26 = 2 points
4.3: 8 = 1 point
4.1-4.3 combined problems: w7.1abc = 2 points each, d = 1 point; w7.2ab = 1 point each, c = 2 points; w7.3ab = 1 point each; w7.4, w7.5 = 2 points each.
Due October 24
lab6.pdf lab7sols.pdf (It was the week 7 lab, numbering was inconsistent.)
Due October 25 Due date extended to Monday October 28, at 5:00 p.m.
hw8.pdf
lab7.pdf (was part of hw8.pdf)
hw8sols.pdf solutions
grading: 20 points, distributed as follows
4.1-4.4: w8.1ab = 2 points each
5.1: 10, 12, 14 = 2 points each
5.2: 8 = 2 points
combined problems: w8.3abc = 1 point each, w8.4bcd = 1 point each, f = 2 points.
Due November 1
hw9.pdf
hw9sols.pdf solutions
grading: 20 points, distributed as follows
5.3: w9.1abe = 2 points each, w9.2 = 2 points, w9.3ab = 1 point each, w9.3c = 2 points.
5.4: 4, 10, 17, 21 = 2 points each
Due November 7
lab9.pdf
Due November 8
hw10.pdf Note: the two variation of parameters problems, 5.5.52, 58, are no longer required.
lab10.pdf (the last three extended problems from hw10.pdf)
hw10sols.pdf solutions except for w10.2,3,4.
lab10sols.pdf solutions to w10.2,3.4
grading: 20 points, distributed as follows
w10.1 a = 1 point, d = 2 points, e = 2 points;
w10.2 bcd = 2 points each (lab #1); w10.3 abc= 2 points each (lab #2); w10.4 a=2 points, b = 1 point (lab #3).
Due November 13 Thursday because exam 2 is on Friday, and includes this material note: due date has been extended from Wednesday - hand homework in at lab. Also, the initial conditions in problem w11.7 have been changed to x(0)=0,x'(0)=0.
hw11.pdf
http://www.youtube.com/watch?v=9AXr7dIr0Ng "Patrick JMT" explanation of partial fractions, with links to more of his videos in the right margin.
hw11sols.pdf
grading: 20 points, distributed as follows
10.1: w11.1, w11.2, w11.3a, w11.4a = 2 points each
10.2-10.3: w11.6 = 2 points, w11.7a = 3 points, w11.7b = 1 point, 10.2.20, 10.3.20, 10.3.30 = 2 points each.
Due November 25 Note: due date has been extended to be Monday at 5:00 p.m.
hw12.pdf
hw12sols.pdf
grading: 20 points, distributed as follows
6.1-6.2: w12.1abcd = 2 points each, w12.2ab = 2 points each.
Laplace: w12.4 = 2 points, 10.5.34 = 3 points, w12.5a = 1 point, 10.4.37 = 2 points.
Due November 27 (Wednesday) (except for the parts that are from hw12, which are due Monday November 25)
lab12.pdf for November 21 meeting
convolveToSolve2250.m matlab code for experimentation with convolution solutions to forced oscillation problems
EP7.6.pdf supplemental Edwards-Penney section on convolution solutions and impulse function forcing.
Due December 6 and December 9 (The 7.1-7.3 related problems are due on Friday before class, and the 7.4 related problems are due Monday by 5:00 p.m.)
hw13-14.pdf
lab14.pdf selected problems from hw13-14.pdf
hw13-14sols_7.1-7.3.pdf Solutions for 7.1-7.3 problems.
grading for 7.1-7.3: 20 points, distributed as follows
7.1: 8 = 1 point, 24 = 2 points; w13.1d = 2 points, e,f,g = 1 point each
7.2-7.3: 7.2.14 = 1 point, w13.2a = 2 points, w13.3 = 3 points, w14.1b = 2 points, d=4 points (2 points for homogeneous, 1 for particular, 1 for IVP).
hw13-14sols_7.4.pdf Solutions for 7.4 problems.
grading for 7.4: 20 points, distributed as follows: 4 points for handing in homework, with the remaining 16 points according to:
7.4: 2 = 2 points, 8 = 4 points, 18 = 4 points, w14.2ab, w14.3 = 2 points each.
Due December 13
hw15.pdf
lab15.pdf selected problems from hw15.pdf
hw15sols.pdf
grading: 20 points if you turned in the homework.