There are 1 questions in this calculation: for each question, the 1 derivative of y is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ -2yx*4(x*2 + y*2)*2 + 3yx*2(x*2 + y*2) + 2y*3x*2(x*2 + y*2)*2 - y*3(x*2 + y*2)\ with\ respect\ to\ y：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 28x^{2}y + 28xy^{2} - 6xy - 6y^{2}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 28x^{2}y + 28xy^{2} - 6xy - 6y^{2}\right)}{dy}\\=&28x^{2} + 28x*2y - 6x - 6*2y\\=&56xy + 28x^{2} - 6x - 12y\\ \end{split}\end{equation} \]

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