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Homework Help: Addition of Families of Intervals Question

  1. Sep 19, 2009 #1
    1. The problem statement, all variables and given/known data
    Let A= {[-2,5],[1/2,2]} and B={[1,7],][1/4,3]}. Calculate the family A+B.

    2. Relevant equations
    Given F and G families of intervals, F+G is the family {I+J [tex]\left|[/tex] I[tex]\in[/tex]F, J[tex]\in[/tex]G}

    3. The attempt at a solution
    I don't understand how to calculate A+B from this equation. How do you know which intervals to add? Do I add each interval to eachother to get 4 intervals in the family? I am confused.
    Last edited: Sep 20, 2009
  2. jcsd
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