There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ sqrt(cos(x) + 3) + sqrt(2sin(x) + 7)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( sqrt(cos(x) + 3) + sqrt(2sin(x) + 7)\right)}{dx}\\=&\frac{(-sin(x) + 0)*\frac{1}{2}}{(cos(x) + 3)^{\frac{1}{2}}} + \frac{(2cos(x) + 0)*\frac{1}{2}}{(2sin(x) + 7)^{\frac{1}{2}}}\\=&\frac{-sin(x)}{2(cos(x) + 3)^{\frac{1}{2}}} + \frac{cos(x)}{(2sin(x) + 7)^{\frac{1}{2}}}\\ \end{split}\end{equation} \]

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