There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ Acos(ax) + Bsin(ax)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( Acos(ax) + Bsin(ax)\right)}{dx}\\=&A*-sin(ax)a + Bcos(ax)a\\=&-Aasin(ax) + aBcos(ax)\\ \end{split}\end{equation} \]

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