Linear Algebra
Math 2270-004
Spring 2018
Homework Page

2270-004 home page
Department of Mathematics
College of Science
University of Utah

Homework assignments will be posted Wednesdays , 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 end of class on Wednesdays. A subset of the weekly homework problems are underlined and bold-face, and at the start of class on Wednesdays you will hand in carefully written up solutions to this subset of the homework. There will also be lab worksheets. These problems will be handed out in your lab meetings, and due at the start of lab the following week.
    homeworkguidelines.pdf for written homework (thanks to Victor Camacho from a class a long time ago).

Due January 17
    hw1.pdf  
   Grading: 20 points possible, distributed as follows:
      1.1: 13, 17, 33 = 2 points each
      1.2: 3, 13 = 2 points each; 21 = 2.5 points (5 true-false questions at half a point each)
      1.3: 5=1 point, 7 = 2 points, 9=1 point, 13 = 2 points, 25 = 1.5 points (3 TF at half a point each)
      Lay1.1.pdf, Lay1.2.pdf, Lay1.3.pdf   Sections 1.1-1.3 of our text, for students who don't have the book yet.

Due January 24
    hw2.pdf  
   Grading: 20 points possible, distributed as follows: .5 points "free".
      1.4: 17, 19 = 2 points each, 25 = 1 point, 31 = 2 points.
      1.5: 11, 21 = 2 points each; 23 = 2.5 points (5 true-false questions at half a point each), 31 = 2 points.
      1.6: 7, 13 = 2 points each

Due January 31
    hw3.pdf  
   Grading: 20 points possible, distributed as follows:
      1.7: 5, 17 = 1 point each, 21 = 2 points; 27, 28 = 1 point each.
      1.8: 9, 11 = 1 point each; 13, 27 = 2 points each.
      1.9: 3, 9, 35, 39 = 2 points each

Due February 7
    hw4.pdf  
   Grading: 20 points possible, distributed as follows:
      2.1: 9 = 1 point, 25 = 2 points.
      2.2: 7ab = 1 point each; w4.1a = 1 point, b = 2 points, c,d = 1 point each; e = 2 points; w4.2 = 2 points.
      2.3: 11abcd = 1/2 point each; 15, 19 = 2 points each.

Due February 21
    hw6.pdf  
   Grading: 20 points possible, distributed as follows:
      3.1: 9 = 2 points, 25, 27, 29 = 1 point each.
      3.2: 5 = 2 points; 39abde = 1/2 point each
      3.3: 18 = 1 point (this is how I make matrices to invert on exams); 21, 27 = 2 points. w6.1abc = 2 points each.

Due February 28
    hw7.pdf  
   Grading: 20 points possible, distributed as follows:
      4.1: 3, 5 = 1 point each, 13, 19 = 1.5 points each.
      4.2: 7, 9 = 2 points each, 25 = 3 points.
      4.3: 15 = 2 points; w7.1ac = 2 points each; bd = 1 point each.

Due March 7
    hw8.pdf  
Grading: 20 points possible.
      4.4: 3, 11 = 1 point each; 31b = 2 points
      4.5: 11 = 1 point, 19abce = 1/2 point each; 25 = 1 point
      4.6: 7 = 2 points, 9, 11 = 1 point each, 27 = 2 points. w8.1ab = 1 point each, d = 2 points; w8.2 = 2 points.

Due March 14
    hw9.pdf  
Grading: 20 points possible.
      4.7: 1, 7 = 2 points each
      5.1: 25 = 2 points
      5.3: 21, 25 = 2 points each
      w9.1 abd, w9.2b, w9.3 = 2 points each.

Due April 4
    hw10.pdf  
Grading: 25 points possible.
      5.4: 5, 13, 17 = 2 points each
      5.5: 1, 13 = 2 points each
      5.6: 3, 4 = 2 points each; Google page rank 5ac, 7 = 2 points each.
      6.1: 9, 11, 13, 17 = 1 point each
      6.2: 3 = 1 point.

Due April 11
    hw11.pdf  
Grading: 20 points possible, plus 4 extra credit
      6.2: 9 = 2 points
      6.3: 7, 11, 21 = 2 points each; w12.1 = 4 points extra credit (a = 3 points, b = 1 point).
      6.4: 7, w12.2ab, w12.3 = 2 points each.
      6.5: 9, 17 = 2 points each.

Due April 18
    hw12.pdf  
      powerlawsforhw.pdf   Maple and Wolfram alpha commands and output for taking ln-ln data and getting a least squares line fit to that, in order to model the original data with a power law.
      powerlaws_forhw.mw (to download with the "openURL" command from Maple) I've added all the commands you'll need, in the order you'll need them, at the end of the document. Maple is available on all University computers, and google (or I, or lab assistants) can help you if you want to do something and don't know how.
      https://matrixcalc.org/en/    This on-line matrix calculator can handle matrices of arbitrary size.
      https://www.desmos.com/calculator    on-line grapher that will make great plots for your Fourier series question.
Grading: 20 points possible, plus 10 extra credit for power law problem
      6.6: 1, 7 = 2 points each; height-weight power law problem = 10 points extra credit.
      6.7: 25 = 3 points
      6.8: w13.2a = 3 points, b = 1 point.
      7.1: 4, 5 = 1 point each; 7, 15 = 2 points each; 19 = 3 points.

Due April 24 at 6:00 p.m.
    hw13.pdf  
Grading: 20 points possible (subject to grader availability)
      7.1 w14.1, 14.3ab = 2 points each
      7.2: 3, 7, 9, 16 = 2 points each, w14.2ab = 3 points each