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

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