There are 1 questions in this calculation: for each question, the 1 derivative of i is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (\frac{m}{((m - 1)(1 - i))} - 1)\ with\ respect\ to\ i：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{m}{(-mi + m + i - 1)} - 1\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{m}{(-mi + m + i - 1)} - 1\right)}{di}\\=&(\frac{-(-m + 0 + 1 + 0)}{(-mi + m + i - 1)^{2}})m + 0 + 0\\=&\frac{m^{2}}{(-mi + m + i - 1)^{2}} - \frac{m}{(-mi + m + i - 1)^{2}}\\ \end{split}\end{equation} \]

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