There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ {x}^{3} - 3xy + 3{y}^{2} - 15x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = x^{3} - 3yx + 3y^{2} - 15x\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( x^{3} - 3yx + 3y^{2} - 15x\right)}{dx}\\=&3x^{2} - 3y + 0 - 15\\=&3x^{2} - 3y - 15\\ \end{split}\end{equation} \]

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