There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 4({cos(x)}^{2} - {sin(x)}^{2}) - 2\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 4cos^{2}(x) - 4sin^{2}(x) - 2\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 4cos^{2}(x) - 4sin^{2}(x) - 2\right)}{dx}\\=&4*-2cos(x)sin(x) - 4*2sin(x)cos(x) + 0\\=&-16sin(x)cos(x)\\ \end{split}\end{equation} \]

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