There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{(1 - {(1 + r)}^{-10})}{r}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{1}{r} - \frac{1}{(r + 1)^{10}r}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{1}{r} - \frac{1}{(r + 1)^{10}r}\right)}{dx}\\=&0 - \frac{(\frac{-10(0 + 0)}{(r + 1)^{11}})}{r} + 0\\=&0\\ \end{split}\end{equation} \]

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