There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 8sqrt(yx) - 3yx\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 8sqrt(yx) - 3yx\right)}{dx}\\=&\frac{8y*\frac{1}{2}}{(yx)^{\frac{1}{2}}} - 3y\\=&\frac{4y^{\frac{1}{2}}}{x^{\frac{1}{2}}} - 3y\\ \end{split}\end{equation} \]

Your problem has not been solved here? Please take a look at the  hot problems ！