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

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