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

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