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

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