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

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