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

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