tentukan integral tak tentu berikut ini

[tex]\displaystyle \int(\tan x-\sec x)^2\,dx=\int\tan^2x-2\tan x\sec x+\sec^2x\,dx\\\int(\tan x-\sec x)^2\,dx=\int\sec^2x-1-2\tan x\sec x+\sec^2x\,dx\\\int(\tan x-\sec x)^2\,dx=\int2\sec^2x-2\tan x\sec x-1\,dx\\\boxed{\boxed{\int(\tan x-\sec x)^2\,dx=2\tan x-2\sec x-x+C}}[/tex]