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

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