Dave's Web Corner

MTH-122W Week 10 (October 27-November 2)

• Outline
• Assessments
• Handouts
• Videos
• Technology

Outline

8.1 Systems of Linear Equations and Inequalities in Two Variables

• recommended problems
  • 2, 6, 8, 10, 14, 18, 20, 22, 24, 26, 30, 32, 38, 40, 44, 48, 52, 54, 56, 58, 62, 66, 74, 82, 86
• learning objectives
  • solve systems of linear equation in two variables by elimination
  • understand what is meant by an inconsistent system of linear equations
  • understand what is meant by a dependent system of linear equations
  • relate the nature of the solution(s) of a system of linear equations to their respective graphs
  • graph and solve systems of linear inequalities in two variables
  • use systems of equations and systems of inequalities to solve applied problems

8.2 Systems of Linear Equations in Three Variables

• recommended problems
  • 2, 6, 8, 10, 12, 16, 18, 20, 22, 26, 28, 30, 32, 34, 36, 38, 40, 44, 48
• learning objectives
  • solve systems of linear equations in three variables using Gaussian elimination
  • understand what is meant by an inconsistent system of linear equations in three variables
  • understand what is meant by a dependent system of linear equations in three variables
  • use systems of linear equations in three variables to solve applied problems

8.3 Solving Systems of Equations Using Matrices

• recommended problems
  • 2, 6, 12, 14, 18, 20, 22, 24, 26, 28, 30, 34, 36, 38, 40, 42, 46, 48, 52, 56, 60
• learning objectives
  • perform gaussian elimination using matrices
  • perform gauss-jordan elimination to solve a system of linear equations
  • solve systems of equation arising from applications

8.4 Operations with Matrices

• recommended problems
  • 4, 6, 12, 18, 20, 22, 24, 26, 28, 30, 34, 36, 40, 42, 44, 48, 52, 54, 56, 62, 64
• learning objectives
  • define a matrix
  • perform matrix addition and scalar multiplication
  • find the product of two matrices
  • use matrices and matrix operations in applications

Assessments

• All assessments are completed at https://www.xyzhomework.com
• Calendar of all XYZ Homework assessment deadlines (homework, quizzes, exams)
• Homework
  • Homework 10 due by 11:59pm, Saturday, November 2: Sections 8.1, 8.2, 8.3, 8.4
  • Homework 11 due by 11:59pm, Saturday, November 9: Sections 8.5, 8.6, 8.7, 8.8
• Quiz
  • Quiz 5 due by 11:59pm, Tuesday, October 29: Chapter 4
  • Quiz 6 due by 11:59pm, Tuesday, November 12: Chapter 8
• Exam
  • Exam 3 due by 11:59pm, Thursday, November 14: Chapters 4, 8

Handouts

• Announcements
  • Schmidt Award
  • Math Graduate Award
  • Honors Program introduction
  • Tutoring Center services
• Graph Paper is a folder containing a variery of graph paper
  • Rectangular Grids 1 Large Coarse
  • Rectangular Grids 1 Large Medium
  • Rectangular Grids 3 Small
  • Rectangular Grids 6 Small
  • Rectangular Grids 3 Wide
  • Polar Grids 1 Large
  • Polar Grids 3 Small
  • Polar Grids 6 Small
• Quadratic Functions and Expressions
  • parabola facts
  • the quadratic formula
  • complete the square
  • completing the square examples
  • complete the square and the quadratic formula
• Polynomials
  • Factor, Solve, and Graph
• Function Graphs
  key points of the basic graphs
• Exponential and Logarithmic Functions
  • Exponents and Logarithms (solution)
  • Exponential and Logarithms Review (solution)
  • Exponential, Logarithmic, and Logistic Models (solution)

Videos

• Playlists
  • MTH-122 Recommended Problems
  • MTH-122 Topics
• Recommended Problems
  • Chapter 8
• Topics
  • Chapter 8

Technology

• Communication
  • Zoom
  • Joining a Zoom Webinar
• Calculator
  • TI-84 Keystroke Guide
• Desmos
  • The Intersection of Two Lines
  • A Region of Linear Inequalities
  • Linear Programming Example
  • The Intersection of Three Planes