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

Your problem has not been solved here? Please take a look at the  hot problems ！