There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ -(\frac{A}{w})cos(wx + r) + Bx\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{-Acos(wx + r)}{w} + Bx\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{-Acos(wx + r)}{w} + Bx\right)}{dx}\\=&\frac{-A*-sin(wx + r)(w + 0)}{w} + B\\=&Asin(wx + r) + B\\ \end{split}\end{equation} \]

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