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

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