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

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