There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{60}{(x + 1)} + \frac{40}{(1.35 + x)} - \frac{100}{(1.1 + x)}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{60}{(x + 1)} + \frac{40}{(x + 1.35)} - \frac{100}{(x + 1.1)}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{60}{(x + 1)} + \frac{40}{(x + 1.35)} - \frac{100}{(x + 1.1)}\right)}{dx}\\=&60(\frac{-(1 + 0)}{(x + 1)^{2}}) + 40(\frac{-(1 + 0)}{(x + 1.35)^{2}}) - 100(\frac{-(1 + 0)}{(x + 1.1)^{2}})\\=&\frac{-60}{(x + 1)(x + 1)} - \frac{40}{(x + 1.35)(x + 1.35)} + \frac{100}{(x + 1.1)(x + 1.1)}\\ \end{split}\end{equation} \]

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