There are 1 questions in this calculation: for each question, the 4 derivative of π is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ 4th\ derivative\ of\ function\ cos(π)\ with\ respect\ to\ π：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( cos(π)\right)}{dπ}\\=&-sin(π)\\=&-sin(π)\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( -sin(π)\right)}{dπ}\\=&-cos(π)\\=&-cos(π)\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( -cos(π)\right)}{dπ}\\=&--sin(π)\\=&sin(π)\\\\ &\color{blue}{The\ 4th\ derivative\ of\ function:} \\&\frac{d\left( sin(π)\right)}{dπ}\\=&cos(π)\\=&cos(π)\\ \end{split}\end{equation} \]

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