Question

Hi! Need help with this problem real quick. What is the indefinite integral of sec x dx?

Answer 1

derivation please. i've been looking up the answer but i keep on seeing different ones -_-

Answer 2

Start with that: \[\int \sec x \dfrac{\sec x + \tan x}{\sec x + \tan x}dx\]\[\operatorname{Let}~u=\sec x + \tan x,~du = \sec x \tan x + \sec^2 x ~dx\]

Answer 3

pretty sure I helped too much :)

Answer 4

Thank you so much! I'll try that and see what happens :)