There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 63{x}^{2}({(sin(7{x}^{3}))}^{2})cos(7{x}^{3})\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 63x^{2}sin^{2}(7x^{3})cos(7x^{3})\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 63x^{2}sin^{2}(7x^{3})cos(7x^{3})\right)}{dx}\\=&63*2xsin^{2}(7x^{3})cos(7x^{3}) + 63x^{2}*2sin(7x^{3})cos(7x^{3})*7*3x^{2}cos(7x^{3}) + 63x^{2}sin^{2}(7x^{3})*-sin(7x^{3})*7*3x^{2}\\=&126xsin^{2}(7x^{3})cos(7x^{3}) + 2646x^{4}sin(7x^{3})cos^{2}(7x^{3}) - 1323x^{4}sin^{3}(7x^{3})\\ \end{split}\end{equation} \]

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