There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ ({(\frac{1}{(1 + \frac{1.89(50 * {10}^{-6}*3*3.14){10}^{-7}}{({(10 * {10}^{-6})}^{2}*100*1.4*1000)})})}^{2}(-1225{x}^{2}))\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -1209.5690074259x^{2}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -1209.5690074259x^{2}\right)}{dx}\\=&-1209.5690074259*2x\\ \end{split}\end{equation} \]

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