There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ (50 - x)(1 + \frac{(100 + 8x)}{100})\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 2x - \frac{2}{25}x^{2} + 100\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 2x - \frac{2}{25}x^{2} + 100\right)}{dx}\\=&2 - \frac{2}{25}*2x + 0\\=& - \frac{4x}{25} + 2\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( - \frac{4x}{25} + 2\right)}{dx}\\=& - \frac{4}{25} + 0\\=& - \frac{4}{25}\\ \end{split}\end{equation} \]

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