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Homework Help: Find the area under the curve by integration Again

  1. May 3, 2010 #1
    1. The problem statement, all variables and given/known data

    This is a piecewise function;
    Part 1: y = 360(1.029x) For domain 0 < x < 54
    Find the area from x=24 to 54 hours

    And Part 2: y = 3900(0.98x) + 472 For domain 54 < x < 144
    Find the area from x=54 to 120

    2. Relevant equations
    http://upload.wikimedia.org/math/8/1/9/819ac78e8461a8a9c55f3f845e577620.png

    3. The attempt at a solution
    I still need to learn Integration =/
    This is just an extra effort in itself... But I need it done in under half an hour
    Please try to help if you have the time =/
     
  2. jcsd
  3. May 3, 2010 #2

    rock.freak667

    User Avatar
    Homework Helper

    In this case, since you need to find area and don't know integration. If you draw your lines and then draw the two x boundaries, it will form a geometric shape, which you should be able to find the area of.

    So for y = 360(1.029x), sketch this graph first and then draw the lines x=24 and x=54. What shape does the enclosed region form? Can you find the area now?
     
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