There are 1 questions in this calculation: for each question, the 2 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ second\ derivative\ of\ function\ -7e^{-7}{X}^{6} + 7e^{-0.5}{X}^{5} - 0.0025{X}^{4} + 0.0419{X}^{3} - 0.8557X + 19.123\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = -7X^{6}e^{-7} + 7X^{5}e^{-0.5} - 0.0025X^{4} + 0.0419X^{3} - 0.8557X + 19.123\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( -7X^{6}e^{-7} + 7X^{5}e^{-0.5} - 0.0025X^{4} + 0.0419X^{3} - 0.8557X + 19.123\right)}{dx}\\=&-7X^{6}e^{-7}*0 + 7X^{5}e^{-0.5}*0 + 0 + 0 + 0 + 0\\=&0\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 0\right)}{dx}\\=&0\\ \end{split}\end{equation} \]

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