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Math Help - diferentiation with trig please help

  1. #1
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    diferentiation with trig please help

    how do u find the second derivative of x= t + sint
    and y= t-cost implicitly
    i know that the answer should be a constant but I cant get it to work, please help.
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  2. #2
    Member SENTINEL4's Avatar
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    x=t+sint

    x'=1+cost .... x''=-sint


    y=t-cost

    y'=1+sint ... y''=cost
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