There are 1 questions in this calculation: for each question, the 4 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 4th\ derivative\ of\ function\ 2xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 2x^{69}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 2x^{69}\right)}{dx}\\=&2*69x^{68}\\=&138x^{68}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 138x^{68}\right)}{dx}\\=&138*68x^{67}\\=&9384x^{67}\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( 9384x^{67}\right)}{dx}\\=&9384*67x^{66}\\=&628728x^{66}\\\\ &\color{blue}{The\ 4th\ derivative\ of\ function:} \\&\frac{d\left( 628728x^{66}\right)}{dx}\\=&628728*66x^{65}\\=&41496048x^{65}\\ \end{split}\end{equation} \]

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