There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ ln(cos(1 - 3x))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = ln(cos(-3x + 1))\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( ln(cos(-3x + 1))\right)}{dx}\\=&\frac{-sin(-3x + 1)(-3 + 0)}{(cos(-3x + 1))}\\=&\frac{3sin(-3x + 1)}{cos(-3x + 1)}\\ \end{split}\end{equation} \]

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