There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{9y}{(5y - 1)} + 4y + \frac{(3{y}^{2})}{(5y - 1)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{9y}{(5y - 1)} + 4y + \frac{3y^{2}}{(5y - 1)}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{9y}{(5y - 1)} + 4y + \frac{3y^{2}}{(5y - 1)}\right)}{dx}\\=&9(\frac{-(0 + 0)}{(5y - 1)^{2}})y + 0 + 0 + 3(\frac{-(0 + 0)}{(5y - 1)^{2}})y^{2} + 0\\=&0\\ \end{split}\end{equation} \]

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