There are 1 questions in this calculation: for each question, the 15 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 15th\ derivative\ of\ function\ \frac{{x}^{3}}{(1 + x)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{x^{3}}{(x + 1)}\\\\ &\color{blue}{The\ 15th\ derivative\ of\ function:} \\=&\frac{-1307674368000x^{3}}{(x + 1)^{16}} + \frac{3923023104000x^{2}}{(x + 1)^{15}} - \frac{3923023104000x}{(x + 1)^{14}} + \frac{1307674368000}{(x + 1)^{13}}\\ \end{split}\end{equation} \]

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