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Math Help - Check a derivative

  1. #1
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    Check a derivative

    The equation is s(t)=14ln(-cos(x/2+1.67))+34
    my derivative is -7tan(x/2+1.67)
    is that right?
    Last edited by mr fantastic; May 8th 2009 at 09:18 PM. Reason: Moved from original thread
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  2. #2
    Senior Member
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    Hello

    Quote Originally Posted by jahichuanna View Post
    The equation is s(t)=14ln(-cos(x/2+1.67))+34
    my derivative is -7tan(x/2+1.67)
    is that right?
    Yes, this is correct.

    Yours
    Rapha
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