There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ {(4x + 5)}^{7}(\frac{1}{28})\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{1}{28}(4x + 5)^{7}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{1}{28}(4x + 5)^{7}\right)}{dx}\\=&\frac{1}{28}(7(4x + 5)^{6}(4 + 0))\\=&(4x + 5)^{6}\\ \end{split}\end{equation} \]

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