There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ 9663{(1 + i)}^{-5} + 26910{(1 + i)}^{-20}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{9663}{(i + 1)^{5}} + \frac{26910}{(i + 1)^{20}}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{9663}{(i + 1)^{5}} + \frac{26910}{(i + 1)^{20}}\right)}{dx}\\=&9663(\frac{-5(0 + 0)}{(i + 1)^{6}}) + 26910(\frac{-20(0 + 0)}{(i + 1)^{21}})\\=& - 0\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( - 0\right)}{dx}\\=& - 0\\ \end{split}\end{equation} \]

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