There are 1 questions in this calculation: for each question, the 6 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 6th\ derivative\ of\ function\ \frac{{x}^{3}}{(1 + x)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{x^{3}}{(x + 1)}\\\\ &\color{blue}{The\ 6th\ derivative\ of\ function:} \\=&\frac{720x^{3}}{(x + 1)^{7}} - \frac{2160x^{2}}{(x + 1)^{6}} + \frac{2160x}{(x + 1)^{5}} - \frac{720}{(x + 1)^{4}}\\ \end{split}\end{equation} \]

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