Section 4.4: Absolute Value Graphically

Learning Objectives

In this section, you will:

  • Graph linear absolute value functions.
  • Graph quadratic absolute value functions.

    Let’s Get Started…

    You Tube’s the “All Around Math Guy” does a nice job of breaking up this process into two pieces.  Check out Part 1: The Absolute Value of a Linear Function

     

    Then, take things up a degree with the “All Around Math Guy’s” Part 2: The Absolute Value of a Quadratic Function

    You can subscribe to The All Around Math Guy’s channel and/or see more helpful videos at:  https://www.youtube.com/@AllAroundMathGuy


    Section 4.4 Exercises

    1. Check out Khan Academy’s Motion Problems with Definite Integrals.

    • Practice problems follow the discussion.
    • Answers are automatically checked!

     

    This content comes directly from AndyMath.com’s Integrals of Absolute Value Functions

    Access this resource for free at https://andymath.com/integrals-of-absolute-value-functions/

     

    [Answers to odd problem numbers are provided at the end of the problem set.  Just scroll down!]

     

    Evaluate each of the following definite integrals using a graph of the integrand and geometry.

    1.  [latex]\int_{0}^{3} |x-2| \,dx[/latex]

     

    2.  [latex]\int_{0}^{6} |2x-4| \,dx[/latex]

     

    3.  [latex]\int_{0}^{4} |x+3| \,dx[/latex]

     

    4.  [latex]\int_{0}^{4} |3x-6| \,dx[/latex]

     

    5.  [latex]\int_{-4}^{4} |x| \,dx[/latex]

     

    6.  [latex]\int_{0}^{3} |x+1| \,dx[/latex]

     

    7.  [latex]\int_{-1}^{4} |3x-5| \,dx[/latex]

     

    8.  [latex]\int_{-1}^{2} |5-x| \,dx[/latex]

     

    9.  [latex]\int_{-7}^{-3} -|x+5| \,dx[/latex]

     


    Answers to Section 4.4 Odd Problems

    1.  2.5

     

    3.  20

     

    5.  16

     

    7.  [latex]\frac{113}{6}[/latex]

     

    9.  -4

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