There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{-ax}{b} + 5ln(1 + 5x)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{-ax}{b} + 5ln(5x + 1)\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{-ax}{b} + 5ln(5x + 1)\right)}{dx}\\=&\frac{-a}{b} + \frac{5(5 + 0)}{(5x + 1)}\\=&\frac{-a}{b} + \frac{25}{(5x + 1)}\\ \end{split}\end{equation} \]

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