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

Your problem has not been solved here? Please take a look at the  hot problems ！