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First Derivative problem help

  1. Dec 20, 2009 #1
    What is the first derivative of

    [tex]x(t) = Acos(wt) + Bsin(wt) + \frac{F}{2mw}tsin(wt)[/tex]

    I find:

    [tex]-Awsin(wt) + Bwcos(wt) + \frac{Ftcos(wt)+Fsin(wt)}{2mw}[/tex]

    is correct ?
  2. jcsd
  3. Dec 20, 2009 #2
    Re: Derivative

    I believe you're missing a factor of w in the first term of the numerator of the fraction.
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