There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ ({cos(a({x}^{3}))}^{3})\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = cos^{3}(ax^{3})\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( cos^{3}(ax^{3})\right)}{dx}\\=&-3cos^{2}(ax^{3})sin(ax^{3})a*3x^{2}\\=&-9ax^{2}sin(ax^{3})cos^{2}(ax^{3})\\ \end{split}\end{equation} \]

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