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Math Help - Rates of Change

  1. #1
    Junior Member
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    Feb 2009
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    Rates of Change

    Hi Guys!

    I have a few questions from Grade 12U Calculus class, I've gone through all the questions and completed them but I'm not sure if I did them correctly....
    if someone could please check my answers and let me know if i went wrong anywhere that would be awesome

    The height of a ball dropped is given by: h(t) = -4.9t^2 + 450

    I scanned my actual work I did instead of trying to type it all out and confusing everyone:

    http://i616.photobucket.com/albums/t...ookies/bcd.jpg

    Thanks for any help I can get!
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  2. #2
    MHF Contributor
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    I didn't check your calculations, but your set-ups look fine. I'm assuming for the secant method, you were told to use a time .5 seconds off the other time. Looks good.
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  3. #3
    Junior Member
    Joined
    Feb 2009
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    Thank You

    It's an online class and my lesson book could be better so that's why I was afraid I was doing it wrong.
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