There are 1 questions in this calculation: for each question, the 2 derivative of y is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ (1 + {x}^{2})sin(x)\ with\ respect\ to\ y：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = sin(x) + x^{2}sin(x)\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( sin(x) + x^{2}sin(x)\right)}{dy}\\=&cos(x)*0 + x^{2}cos(x)*0\\=&0\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 0\right)}{dy}\\=&0\\ \end{split}\end{equation} \]

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