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

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