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    melissamebane's Avatar
    melissamebane Posts: 2, Reputation: 1
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    #1

    May 29, 2007, 08:39 PM
    The maximum height of a baseball
    The path of a baseball after it has been hit is modeled by the function:

    h=-0.0032 d (squared) + d + 3

    where h is the height in feet of the baseball and d is the distance in feet the baseball is from homeplate . What is the maximum height reached by the baseball? How far is the baseball from home plate when the ball reaches its maximum height?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    May 29, 2007, 11:37 PM
    Do you know how to differentiate?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #3

    May 30, 2007, 11:33 AM
    The equation given forms a parabola. You can find the x-coordinate of the vertex by using



    Plug that value into the formula to find y, the height of the ball.
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