Question

the integral sec2x/tanx

Answer 1

\[\large \int\limits\frac{1}{\color{orangered}{\tan x}} \;\color{royalblue}{\sec^2x\;dx}\]

If we let \(\large \color{orangered}{u=tan x}\)
What do you get for your \(\large du\)?

Answer 2

@SonAn knock,knock, ask for help and then disappear??