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Differential Equations
2250-1 home page
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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 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 24
hw1.pdf
textsections1.1-1.2.pdf , for students who don't have their books yet.
texthw1.1-1.2.pdf, just the section 1.1-1.2 homework problems. Ignore the markings I've made next to various problems through the years - your correct assignment is the one shown above.
hw1sols.pdf
Grading: 20 points, distributed as follows:
1.1: 30 = 2 points, 46 = 2 points, w1.1ab = 1 point each.
1.2: 18 = 2 points, 30ab, 36, w1.2abc, w1.3abcdef = 1 point each.
Due August 31
hw2.pdf
text1.3-1.5.pdf text sections, in case you don't have your text yet.
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
Grading: 20 points, distributed as follows:
1.3: 13 = 2 points, w2.1ab = 1 point each.
1.4: 4, 42, 46 = 2 points each.
1.5: 8, 38a, 38b = 2 points each; w2.3a, w2.3b = 2 points each.
Due September 7
maplehw1.pdf is part of your homework. Please submit your .mw Maple file on-line through our CANVAS page. (You access this through our Campus Information System www.cis.utah.edu.) Your file should be written so that when we use the "execute worksheet" option, all the output of your commands will regenerate. If you fear that your file may become corrupted during submission, you may also enclose a .pdf of the Maple file that includes all of the output. If you use an alternate software package like mathematica or matlab, upload the corresponding documents.
maplehw1.mw open this file from Maple.
hw3.pdf is the rest of your homework...note that problem 2.2.23 has been postponed until next week.
EP3.7.pdf supplemental electrical circuits section, for hw.
hw3sols.pdf
Grading: 20 points, distributed as follows:
2.1: 6, 10, 12, 23a, 23b, w3.1 = 2 points each.
2.2: w3.2a,b c = 2 points each.
EP3.7.2 = 2 points.
Due September 14
hw4.pdf
hw4sols.pdf
Grading: 20 points, distributed as follows:
2.2: 23ab = 1 point each.
2.3: 2a = 2 points, 2b = 1 point, 10, 12, 25 = 3 points each; 26 = 2 points.
2.4-2.6: 2.4.4 = 2 points, 2.6.4 = 2 points.
Due September 17 Monday, at midnight
maplehw2.pdf Please submit your .mw Maple file on-line through our CANVAS page, as for your first project. This project can also be completed using Matlab. In that case, submit you .m files the same way. If you use other technology, consult with Professor Korevaar about how to submit your work.
maplehw2.mw open this file from Maple.
If you prefer to use Matlab we will have several introductory sessions in LCB 115. The first one is on Wednesday 9/12, 2-2:50 PM, with more TBA. There are excellent introductory notes about using Matlab, in the context of numerical solutions to DE's, on Victor Camacho's Math 2250 page from this past fall 2011
Due September 21
hw5.pdf
hw5sols.pdf
Grading: 20 points, distributed as follows:
3.1: 6, 28 = 2 points each
3.2: 20 = 2 points
3.3: 34 = 2 points.
3.4: 10 = 2 points, 32ab = 1 point each.
w5.1a = 2 points, bc = 1 point each; w5.2a = 2 points, bc = 1 point each.
Due September 26 Wednesday (exam Thursday)
hw6.pdf Kyle will run a homework problem session on Tuesday Sept 25, 1-1:50 p.m., in JTB 310. He'll also have office hours Tuesday 2-2:50 in JWB 240.
hw6sols.pdf
Grading: 20 points, distributed as follows:
3.5: w6.1ab = 1 each, cd = 2 each; 6.2 find B^-1 = 2 points; p201#2 = 2 points.
3.6: w6.3abcde = 2 points each.
Due October 5
hw7.pdf
hw7sols.pdf
Grading: 20 points, distributed as follows:
w7.1d = 2 points; w7.2bc, w7.3ab = 1 point each; 4.2.6, w7.4, w7.5, w7.6, w7.7cde = 2 points each.
Due October 19
hw8.pdf
hw8sols.pdf
Grading: 20 points, distributed as follows:
4.1-4.1: w8.0ab = 2 points each.
5.1: 6, 10, 14, 27 = 2 points.
5.2: 8, 16 = 2 points each; w8.2befg = 1 point each.
Due October 26
hw9.pdf
hw9sols.pdf
Grading: 20 points, distributed as follows:
5.3: w9.1be, w9.3bc = 2 points each.
5.4: 8, 10 = 2 points each; w9.5abcd = 2 points each.
Due November 2
hw10.pdf Note: You may hand this homework assignment in at class as usual, or you may choose to hand it in by 5:00 PM at my office LCB 204. (Slide it under my door if I am not there.)
EP3.7.pdf supplemental electrical circuits section, for hw. (You also used this section for the Sept. 7 homework.)
hw10sols.pdf
Grading: 20 points, distributed as follows:
5.5: 32, w10.1bde, 52 = 2 points each.
5.6: w10.2ab, w10.3ae, w10.4 = 2 points each.
Due November 7 Wednesday (exam Thursday)
hw11.pdf
hw11sols.pdf
Grading: 20 points, distributed as follows:
10.1: w11.1, w11.2, w11.3a, w11.4a = 2 points each.
10.2: w11.5a = 3 points, w11.5b =1 point, w11.6 = 1 point.
10.3: 30, 32, w11.7a = 2 points each, w11.7b = 1 point.
Due November 16
hw12.pdf
EP7.6.pdf section on impulse functions and convolution applications
hw12sols.pdf
Grading: 20 points, distributed as follows:
10.4: 30, w12.1a = 2 points each.
10.5: 26, w12.2 = 2 points each.
EP7.6: w12.3 = 3 points.
6.1-6.2: w12.4abde = 2 points each; w12.5a = 1 point.
Due November 21 Wednesday (There will also be a quiz on Wednesday.)
hw13.pdf
hw13sols.pdf
Grading: 20 points, distributed as follows:
7.1: 2, 26 = 2 points each; w13.1abcd = 1 point each; g = 2 points.
7.2: 16, w13.2a = 2 points each.
7.3: w13.3, w13.4 = 3 points each.
Due November 30
hw14.pdf
hw14sols.pdf
Grading: 20 points, distributed as follows:
7.3: w14.1 abce = 1 point each; d = 3 points, f = 2 points.
7.4: 2, 8 = 2 points each; 18 = 3 points; w14ab = 1 point each; w14.4 = 2 points.
Due December 7
hw15.pdf
hw15sols.pdf
Grading: 20 points, distributed as follows:
9.2-9.3: w15.1abc = 2 points each, d = 1 point; w15.2 a=1 point, b = 4 points, c = 2 points;
9.4: 10, 14 = 2 points each; w15.4 = 2 points.
Due December 7 at midnight
quakeproj.pdf quakeproj.mw optional technology project about a four story building forced by horizontal sinusoidal displacement of the ground.