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

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