There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ -2arctan(3x) + 2arctan(2x) + 3x\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -2arctan(3x) + 2arctan(2x) + 3x\right)}{dx}\\=&-2(\frac{(3)}{(1 + (3x)^{2})}) + 2(\frac{(2)}{(1 + (2x)^{2})}) + 3\\=&\frac{-6}{(9x^{2} + 1)} + \frac{4}{(4x^{2} + 1)} + 3\\ \end{split}\end{equation} \]

Your problem has not been solved here? Please take a look at the  hot problems ！