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

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