There are 1 questions in this calculation: for each question, the 4 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 4th\ derivative\ of\ function\ Xx + 36xxxx\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = Xx + 36x^{4}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( Xx + 36x^{4}\right)}{dx}\\=&X + 36*4x^{3}\\=&X + 144x^{3}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( X + 144x^{3}\right)}{dx}\\=&0 + 144*3x^{2}\\=&432x^{2}\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( 432x^{2}\right)}{dx}\\=&432*2x\\=&864x\\\\ &\color{blue}{The\ 4th\ derivative\ of\ function:} \\&\frac{d\left( 864x\right)}{dx}\\=&864\\ \end{split}\end{equation} \]

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