There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (865*1.466 + 311 + 0.012*20000 + 865*1.5(0.01*104.9 - 0.01x))(1 + 0.92(0.02x + 0.5))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 23.332856x + 5.7224x + 4.416x + 25.043826x - 12.975x - 0.23874x^{2} - 5.9685x + 4643.04455\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 23.332856x + 5.7224x + 4.416x + 25.043826x - 12.975x - 0.23874x^{2} - 5.9685x + 4643.04455\right)}{dx}\\=&23.332856 + 5.7224 + 4.416 + 25.043826 - 12.975 - 0.23874*2x - 5.9685 + 0\\=& - 0.47748x + 39.571582\\ \end{split}\end{equation} \]

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