There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ xsin(ln(4)x + 3)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = xsin(xln(4) + 3)\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( xsin(xln(4) + 3)\right)}{dx}\\=&sin(xln(4) + 3) + xcos(xln(4) + 3)(ln(4) + \frac{x*0}{(4)} + 0)\\=&sin(xln(4) + 3) + xln(4)cos(xln(4) + 3)\\ \end{split}\end{equation} \]

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