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

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