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

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