Dr. Sarah's Math 2240 Web Page - Spring 2004

  • Dr. Sarah's Office Hours
  • Campus Pipeline To access WebCT (bulletin board, solutions, and grades) and to e-mail yourself attachments.
  • Direct WebCT Access if Campus Pipeline is Down
  • Syllabus and Grading Policies
  • Computer Lab Directions
  • Lamp Modules Philosophy and Questions
  • Installing Lamp at Home
  • Maple Commands and Hints for PS 1
  • Maple Commands and Hints for PS 2
  • Class highlights If you miss a class, then check here and make up the work before the next class.
  • Jump down to tomorrow's homework which is located above the red lines

    Date     WORK DUE at the beginning of class or lab unless otherwise noted! For practice problems, make sure that you can present and/or turn in your work - write out the problem and the complete solution - show work too!

    May 5 - Wed
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    Apr 27 - Tues
    • Review LAMP Ch 4 Module 1 by skimming p. 198-219 of your LAMP book (or redoing the demo on a computer).
    • Work on your final project.

    Apr 22 - Thur
    Apr 19 - Mon
    • Complete and Correct Test 2 revisions due by 7pm (See WebCT posting for select answers).
    • Problem Set 6 Due by 7pm Guidelines
      7.1 #14 by hand and on Maple via the Evectors(A); or Eigenvectors(A); command -- also compare your answers and resolve any apparent conflicts.
      LAMP Module 6.1 Problem 4 Parts A and C: Rotation matrices in R2 Note: To print out geometric pictures for part A, use Headtail(M); which gives a static picture, instead of Clock(M); which gives an animation that won't print out. Also, in part C, look at the eigenvalues and solve for the possible theta that will yield real numbers (recall that the square root of a negative number does not exist as a real number and that cos(theta) is less than or equal to 1 always.)
      7.2 7, 18, and 24
      LAMP Module 6.3 Problem 4 Part A: More foxes and rabbits (Predator-prey model). Hint See p. 348 Section 3 and Example 3A up until about 1/3 the way down on p. 349 "tend toward the zero vector in the limit." and complete a similar analysis.
      EXTRA CREDIT for Part B

    Apr 15 - Thur
    • Meet in 205
    • Work on PS 6
    • Final project abstract and list of references due by 5pm as an electronic file I can read with University software posted to the WebCT bulletin board. This file will be posted onto the main web page.

    Apr 8 - Thur
    Apr 6 - Tues
    • Meet in 205
    • Look over PS 5 Solutions on WebCT and write down any questions you have.

    Apr 5 - Mon
    • Final project proposal (topic needs to be pre-approved by Dr. Sarah) and preliminary list of references due at 7pm

    Apr 2 - Fri
    • Problem Set 5 due at 3:00pm See Problem Set Guidelines
      4.3 (14 if it is a subspace then just state that it is because it is closed under addition and scalar multiplication, but if it is not, explain in detail by showing that one of these is violated, as in class),   21
      LAMP 5.1-- EXTRA CREDIT for proofs of p. 266 number 3
      4.4 12, 16, 24, 26, 53
      LAMP Module 2.4 Problem 11 p. 91-92 (IN MAPLE) hints. This is worth more than the other problems.
      4.5 22, 24, 26, 48
      4.6 22, 24, 27, 29

    Mar 25 - Thur
    • Continue working on PS 5 which will be due sometime next week.
    • At the end of Tuesday's class, you were supposed to have read Dr. Sarah's WebCT postings, and done some work on the final project.

    Mar 23 - Tues
    • Read 4.4 and the handwritten part of the sheet that I gave you (can be picked up from my door if you didn't get it).
    • Continue working on PS 5.

    Mar 18 - Thur
    • Read through PS 4 solutions on WebCT. Begin working on PS 5.

    Mar 16 - Tues
    • Problem Set 4 Due at 5:30 pm See Problem Set Guidelines
      4.1 36 and 44
      LAMP 2.2 p. 60-61 number 6 (IN MAPLE) Hints for the Lamp problem The Lamp problem is worth more than the others.
      4.2 (19, 20, 21, 22, 31 For ALL of thse, if it is a vector space then just state that it is because it satisfies all of the vector space axioms , but if it is not, then write out the complete proof that one axiom is violated as in class)

    Mar 5 - Fri
    • Test 1 revisions due by 5pm (see posting on the WebCT bulletin board containing select comments and hints)
    • Extra credit if you re-read the grading policy from the syllabus and use the grades posted on WebCT to calculate your course grade so far. You must turn in your work and explain enough and show enough work for me to be able to understand each calculation. Be sure to include the attendance part of the course grade too!

    Mar 4 - Thur
    • Work on homework for Friday and for after spring break.
    • Bring your Larsen-Edwards book to class.

    Mar 2 - Tues
    • Carefully read through both sides of the vector space handout and be prepared to quote from it if called on (no need to memorize it, but you should be familiar with it).

    Feb 26 - Thur
    • Meet in 205
    • Test 1 on Chapters 1, 2 and 3 Study Guide
    • Second try of WebCT quiz 1 is due (your grade is the average of the two). If you missed the first try in class, you must come to office hours to discuss this with Dr. Sarah. Careful - the problems may slightly change!

    Feb 24 - Tues
    • Practice Problems 4.1 numbers 7, 35, 43, 49, 52
    • See PS 3 solutions and read over the above study guide.

    Feb 19 - Thur
    • Meet in 205.
    • Problem Set 3 Due at 6pm See Problem Set Guidelines and Maple Commands and Hints for Problem Set 3
      2.510, 16, 24
      Lamp 3.4 p. 147 Problem 4 part b. Extra Credit for Problem 3 parts b and c.
      3.1 38, 47 a, 51
      3.2 31, 32 a and c
      3.3 (28 by-hand and on Maple), (34 -- If a unique solution to Sx=b exists, find it by using the method x=S^(-1) b.), 49, (50 a and c)


    Feb 17 - Tues
    • Practice Problems 3.3 numbers 3, 11, 29, 31, 35
    • Study for WebCT quiz and work on PS 3.


    Feb 12 - Thur
    • Practice Problems 3.1 numbers 19, 21, 33, 49
    • Practice Problem 3.2 number 25


    Feb 9 - Mon
    • Problem Set 2 Due at 7pm See Problem Set Guidelines and Maple Commands and Hints for PS 2
      2.1 24, (26 by-hand and on Maple), 30.
      LAMP 3.4 p. 147 (see hints) Problem 3 part a only and Problem 4 - determine the matrix only (we will do the rest of the problem in the next problem set).
      2.2 34 a, b and c.
      LAMP 3.3 p. 132 Problem 4. Extra Credit for Problem 3
      2.3 12, (14 by hand and on Maple), 28a, 39, (40 c and d).

    Feb 5 - Thur
    • MEET in 205 (Computer Lab)
    • Practice Problems to turn in 2.3 numbers (5, 7, 9 by-hand)
    • Continue working on PS 2

    Feb 3 - Tues
    • Practice Problems to turn in 2.2 numbers 17, 18, 35, 37
    • Compare your Problem Sets to PS 1 solutions on WebCT (be sure to read through them even if you received full credit). Write down any questions you have.
    • Begin working on PS 2 (re-read the Problem Set Guidelines before beginning your writeup)

    Jan 29 - Thur
    • Practice Problems to turn in 2.1 numbers 7, (9 and 11 by-hand), 15, 21, 23, 25, (32 by-hand), 33, 51

    Jan 27 - Tues
    1. Meet in 205.
    2. Problem Set 1 Due at 5pm - See Problem Set Guidelines and and Problem Set 1 Maple Commands and Hints and also see additional postings on the WebCT bulletin board.
      1.1 (24 on Maple), 60, 74,
      1.2 For (30 and 32, do them by hand and also on Maple) (on Maple use no more than 2 commands to solve each problem), 44, 59, 60,
      1.3 24, 26,
      1.3 LAMP p. 33 Problem 3: Design a ski jump.

    Jan 22 - Thur
    1. Read section 1.2
    2. Practice Problems (to turn in) Larsen-Edwards 1.2 numbers 13, 15, 17, 19, 21, 25, 27, 43, 49 (do these by-hand since you need to get efficient at the by-hand method - answers to odd problems are in the back of the book - it is your job to show work).
    3. Continue working on problem set 1.

    Jan 20 - Tues
    1. Read pages 2 - 5 in LAMP (Module 1.1 Section 1).
    2. Practice Problems (to turn in) Larsen-Edwards 1.1 (do all but 53 by-hand since you need practice on this) numbers 53, 61, 73. (answers to odd problems are in the back of the book - it is your job to show work).
    3. Begin working on problem set 1.

    Jan 15 - Thur
    1. Read pages xi - xiv in LAMP (Module 1.1 Section 1).
    2. Read p. xv and section 1.1 in Larsen-Edwards.
    3. Practice Problems (to turn in) Larsen-Edwards 1.1 (do all but number 19 by-hand since you need practice on this) numbers 7, 15, 19, 57, 59 (answers to odd problems are in the back of the book - it is your job to show work).
    4. Bring both books to lab - meet in 205.