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

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