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

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