Question

can i say that the integral of tanx secxtanx = (-lncosx secx)

Answer 1

I don't think you can. Sorry for replying late I was afk.

Answer 2

i think thats tan x + tan x sec x isn't it?

Answer 3

it is integral of tanx secx tanx . i think i should sub with u to get du?

Answer 4

actually i have integral of secxsec^2x. then i try integration by parts. i have u= secx and dv= sec^2x. thats how i end up with tanx secx tanx.