Fall 2021

Math 3120 Introduction to Linear Algebra

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Homework 4

Due Friday October 22, in class
  • Section 3.3 Inverses
    • Read Section 3.3. Do the True/False questions (pp. 191-192). Do Problem 3.68. WeBWorK reading question due October 8 @ 9:45 am.
    • In class (group work): 3.69(l), 3.70(l), 3.78
    • Homework: 3.69(c)(f)(k)(m), 3.70(f), 3.73, 3.79, 3.82, 3.85, 3.89, 3.90, 3.96
    • Hand In: 3.69(k), 3.79, 3.82, 3.90
    • WeBWorK assignment due October 18 @ 11 pm
  • Section 3.4 The LU Decomposition
    • Read Section 3.4. Do Problems 3.104(a)(b), 3.105(a)(d). WeBWorK reading question due October 13 @ 9:45 am.
    • In class (group work): 3.104(c), 3.105(c), 3.110
    • Homework: 3.105(d), 3.108, 3.111, 3.112, 3.113, 3.114, 3.115
    • Hand In: 3.105(d), 3.113
    • WeBWorK assignment due October 20 @ 11 pm
  • Section 3.5 The Matrix of a Linear Transformation
    • Read Section 3.5. Do the True/False questions (p. 230). Do Problems 3.121(b), 3.123(b). WeBWorK reading question due October 15 @ 9:45 am.
    • In class (group work): 3.121(a), 3.123(b), 3.124(a)
    • Homework: 3.118, 3.120, 3.121(d), 3.122(a), 3.124, 3.125, 3.128, 3.130, 3.136
    • Hand In: 3.121(d), 3.125(c), 3.128(h), 3.136
    • WeBWorK assignment due October 25 @ 11 pm