There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ cxx + dxsin(x)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = cx^{2} + dxsin(x)\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( cx^{2} + dxsin(x)\right)}{dx}\\=&c*2x + dsin(x) + dxcos(x)\\=&2cx + dsin(x) + dxcos(x)\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 2cx + dsin(x) + dxcos(x)\right)}{dx}\\=&2c + dcos(x) + dcos(x) + dx*-sin(x)\\=&2c + 2dcos(x) - dxsin(x)\\ \end{split}\end{equation} \]

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