There are 1 questions in this calculation: for each question, the 1 derivative of t is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ 10 + 4cos(\frac{πt}{6})\ with\ respect\ to\ t：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 4cos(\frac{1}{6}πt) + 10\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 4cos(\frac{1}{6}πt) + 10\right)}{dt}\\=&4*-sin(\frac{1}{6}πt)*\frac{1}{6}π + 0\\=& - \frac{2πsin(\frac{1}{6}πt)}{3}\\ \end{split}\end{equation} \]

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