There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ tan(x) - cos(2)x + sin(cos(x - 7))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = tan(x) - xcos(2) + sin(cos(x - 7))\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( tan(x) - xcos(2) + sin(cos(x - 7))\right)}{dx}\\=&sec^{2}(x)(1) - cos(2) - x*-sin(2)*0 + cos(cos(x - 7))*-sin(x - 7)(1 + 0)\\=&sec^{2}(x) - cos(2) - sin(x - 7)cos(cos(x - 7))\\ \end{split}\end{equation} \]

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