There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (\frac{9}{8})ln(x + 5) + (\frac{7}{8})ln(x - 3)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{9}{8}ln(x + 5) + \frac{7}{8}ln(x - 3)\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{9}{8}ln(x + 5) + \frac{7}{8}ln(x - 3)\right)}{dx}\\=&\frac{\frac{9}{8}(1 + 0)}{(x + 5)} + \frac{\frac{7}{8}(1 + 0)}{(x - 3)}\\=&\frac{9}{8(x + 5)} + \frac{7}{8(x - 3)}\\ \end{split}\end{equation} \]

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