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

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