Differential Equations
Math 2250-004
Fall 2016
Homework Page

2250-004 home page
Department of Mathematics
College of Science
University of Utah

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. There will also be lab worksheets. Some of the problems on these worksheets will be from the homework due Friday. Other problems will be handed in separately, before the start of class on Wednesdays.
    homeworkguidelines.pdf for written homework (thanks to Victor Camacho).

Due August 26
    hw1.pdf  
      Sections_1.1-1.3.pdf   and   Sections_1.3-1.5.pdf   of the text, for students who don't have the textbook yet.
    hw1sols.pdf   solutions
Grading: 20 points possible.
      1.1: 6, 27, 30, 34, w1.1ab = 1 point each
      1.2: 2, 9 = 1 point each; 16 = 2 points; 26abc = 1 point each; w1.2ab = 2 points each.
      1.3: w1.3a = 1 point, w1.3b = 2 points.

Due September 1 at the start of your lab session
    Part 2 of lab1.pdf   (Remember to write your name and UID at the top of Part 2.)

Due September 2
    hw2.pdf  
    hw2sols.pdf   solutions
Grading: 20 points possible.
      1.3: 13 = 2 points, w2.2ab = 1 point each, 22.2c = 2 points
      1.4: 4, 20, 36 = 2 points each; 45abc = 1 point each; 49 = 2 points.
      1.5: 8 = 2 points, w2.3 = 1 point.

Due September 8 at the start of your lab session.
    Part 2 of lab2.pdf   (Remember to write your name and UID at the top of Part 2.)

Due September 9
    hw3.pdf  
      EP3.7 supplemental section on RLC circuits needed for this week's homework.
    hw3sols.pdf   solutions
Grading: 20 points possible.
      1.5: 33 = 2 points, 38a=1,b=2,c=1 point, EP 3.7: 2 = 2 points.
      2.1 3, 10, 12 = 2 points each, 23ab = 1 point, w3.1 = 1 point
      2.2 w3.2abc = 1 point each

      mapleintro.pdf brief introduction to Maple
      mapleintro.mw Maple worksheet version - can download from Maple program
      maplecommands.pdf list of commands that are useful in Math 2250
      maplecommands.mw Maple worksheet version - can download from Maple program

Due September 15 at the start of your lab session.
    Part 2 of lab3.pdf  

Due September 16
    hw4.pdf  
    hw4sols.pdf   solutions
Grading: 20 points possible.
      2.3: 2a = 2 points, 2b = 1 point, 3, 9 = 2 points each; 10 = 4 points, 13, 14, 17 = 3 points each.

Due September 22 at the start of your lab session.
    lab4.pdf  
    numerics.m Matlab program for computing Euler, Improved Euler, and Runge Kutta numerical approximations for solutions to first order differential equations. We'll also use this code in class on Wednesday Sept 14.
    numericalpseudocode.pdf Iteration steps for Euler, Improved Euler, Runge-Kutta

Due September 23
    hw5.pdf  
    hw5sols.pdf   solutions
Grading: 20 points possible.
      3.1: 4, 6, = 1 point each, 16 = 2 points, w4.1abc = 1 point each.
      3.2: 8 = 1 point
      3.3: 20, 34 = 2 points each; w5.1 = 3 points (2 points solution, 1 point graph), w5.2 = 2 points.
      3.4: 16 = 1 point, 32 = 2 points.

Due Thursday September 29
at the start of your lab (because there is a midterm exam on Friday)
    hw6.pdf  
    hw6sols.pdf   solutions
Grading: 20 points possible.
      w6.1 abcd = 2 points each, ef = 3 points each; w6.2A = 2 points, B=4 points.

Due September 29 at the start of your lab session.
    lab5.pdf  

Due October 7
    hw7.pdf  
    hw7sols.pdf   solutions
Grading: 20 points possible.
      4.1-4.3: 7.1a=1, bc=2, d=1 each; w7.2abc = 2 each; w7.3ab = 2 each; w7.4 = 2 points, w7.5 = 2 points

Due October 20 at the start of your lab session.
    lab6.pdf  

Due October 21
    hw8.pdf  
    hw8sols.pdf   solutions
Grading: 20 points possible.
      4.2: 4, 9 = 1 point each; 11, 12 = 2 points each
      4.4: 2, 4 = 1 point each; 6 = 2 points
      w8.1ab = 3 points each; c = 2 points; w8.2 = 2 points.

Due October 27 at the start of your lab session.
    lab7.pdf  

Due October 28
    hw9.pdf  
    hw9sols.pdf   solutions
Grading: 20 points possible.
      5.1: 10, 12, w8.3b = 2 points each.
      5.2: 8, 25 = 2 points each
      5.3: w9.1abcd = 2 points each; w9.2 = 2 points.

Due November 3 at the start of your lab session.
    lab8.pdf  

Due November 4
    hw10.pdf  
    hw10sols.pdf   solutions
Grading: 20 points possible.
      5.4: 4, 10, 21 = 2 points each
      5.5: w10.1 ab def = 2 points each, 31, 43 = 2 points each.

Due November 10 at the start of your lab session.
    lab9.pdf  

Due November 10 at the start of your lab session.
    hw11.pdf  
    hw11sols.pdf   solutions
Grading: 20 points possible.
      5.5 52 = 2 points
      5.6 1 = 4 points, 7, 11, 17 = 3 points each, 20 = 2 points, 22 = 3 points.
      Extra credit: w11.1ab = 2 points each.

Due November 18 at the start of class.
    hw12.pdf  
    hw12sols.pdf   solutions
Grading: 20 points possible.
      w12.1, w12.2 = 2 points each; w12.4a = 2 points, w12.4b = 1 point.
      w11.6 = 2 points, w11.7a = 3 points, b = 1 point, c = 1 point. 10.3.30 = 4 points, w11.8b = 2 points.

Due November 23 Wednesday by 6:00 p.m.
    lab10.pdf  

Due November 30 Wednesday by 6:00 p.m.
    hw13.pdf  
    EP7.6   supplemental section EP7.6
    hw13sols.pdf   solutions
Grading: 20 points possible.
      10.4: w13.1a, 36, w13.2 = 2 points each
      10.5: 31 = 2 points
      EP 7.6 2 = 2 points
      6.1-6.2: w13.3 abcd, w13.4b = 2 points each.

Due December 5 at the start of class
    hw14.pdf  
    hw14sols.pdf   solutions
Grading: 20 points possible.
      7.1: 26 = 2 points w14.1ace = 1 point each, b = 2 points
      7.2: 12 = 1 point
      7.3: w 14.2a = 2 points; w14.3 = 3 points; w14.4bc = 2 points each, d = 3 points.

Due December 8 at the beginning of your lab session
    lab11.pdf  

Due December 9 Friday by noon
    hw15.pdf  
    hw15sols.pdf   solutions