There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ {(\frac{{cos(x)}^{3}{(1 + tan(x))}^{3}}{2})}^{-1}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{2}{(tan(x) + 1)^{3}cos^{3}(x)}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{2}{(tan(x) + 1)^{3}cos^{3}(x)}\right)}{dx}\\=&\frac{2(\frac{-3(sec^{2}(x)(1) + 0)}{(tan(x) + 1)^{4}})}{cos^{3}(x)} + \frac{2*3sin(x)}{(tan(x) + 1)^{3}cos^{4}(x)}\\=&\frac{-6sec^{2}(x)}{(tan(x) + 1)^{4}cos^{3}(x)} + \frac{6sin(x)}{(tan(x) + 1)^{3}cos^{4}(x)}\\ \end{split}\end{equation} \]

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