There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{(a + 0.2)*1.1}{1.2} + {(a + 0.3)}^{2}*0.089 - {(a - 0.5)}^{2}*0.087 - (a + 0.4)*0.07 + 0.35\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 0.916666666666667a + 0.089a^{2} + 0.0267a + 0.0267a - 0.087a^{2} + 0.0435a + 0.0435a - 0.07a + 0.491593333333333\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 0.916666666666667a + 0.089a^{2} + 0.0267a + 0.0267a - 0.087a^{2} + 0.0435a + 0.0435a - 0.07a + 0.491593333333333\right)}{dx}\\=&0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0\\=&0\\ \end{split}\end{equation} \]

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