There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{(7200ln(x) + {x}^{2})}{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 3600ln(x) + \frac{1}{2}x^{2}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 3600ln(x) + \frac{1}{2}x^{2}\right)}{dx}\\=&\frac{3600}{(x)} + \frac{1}{2}*2x\\=&\frac{3600}{x} + x\\ \end{split}\end{equation} \]

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