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Homework Help: Polar Graphing

  1. Apr 3, 2008 #1
    1. The problem statement, all variables and given/known data
    Find the Maximum and Minimum of the following equation.
    r=2-2cos([tex]\Theta[/tex])


    3. The attempt at a solution
    Max- 2-2 cos (0[tex]\pi[/tex])=0
    (0,0[tex]\pi[/tex]);(0,2[tex]\pi[/tex])

    Min 2-2cos([tex]\pi[/tex])=4
    (4,[tex]\pi[/tex])

    Do i just have these backwards?
     
  2. jcsd
  3. Apr 3, 2008 #2

    Dick

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    Science Advisor
    Homework Helper

    0<4, so yes, you have them backwards. 4 is the max, 0 is the min.
     
  4. Apr 4, 2008 #3

    HallsofIvy

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    I'm wondering how you determined that
    And, by the way, an equation does not have a max or min- a function does. An equation does not even have a "value" to be max or min.
     
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