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Math Help - implicit differentiation problem. finding cos^2y prime

  1. #1
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    implicit differentiation problem. finding cos^2y prime

     cos^2x+cos^2y = cos(2x+2y)
     -2cos(x)sin(x)-2sin(y)y'cos(y) = -sin(2x+2y)(2+2y')

    //so far so good?
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  2. #2
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    Re: implicit differentiation problem. finding cos^2y prime

    Quote Originally Posted by rabert1 View Post
     cos^2x+cos^2y = cos(2x+2y)
     -2cos(x)sin(x)-2sin(y)y'cos(y) = -sin(2x+2y)(2+2y')

    //so far so good?
    It looks fine so far, so now solve for \displaystyle \begin{align*} y' \end{align*}
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