There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ ln(cos({x}^{\frac{1}{2}}))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( ln(cos({x}^{\frac{1}{2}}))\right)}{dx}\\=&\frac{-sin({x}^{\frac{1}{2}})({x}^{\frac{1}{2}}((0)ln(x) + \frac{(\frac{1}{2})(1)}{(x)}))}{(cos({x}^{\frac{1}{2}}))}\\=&\frac{-sin(x^{\frac{1}{2}})}{2x^{\frac{1}{2}}cos(x^{\frac{1}{2}})}\\ \end{split}\end{equation} \]

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