log (tan x)
cot (log x)
log log (tan x)
tan (log x)
none of these
tan x/2
x tan 1/2 x
cot x/2
ex cot x
sin x + c
cos x + c
c
1
2
3
5
3/2
5/2
cos x
x
sin x
tan x
∫ex [ log (sec x + tan x) + sec x] dx =
ex log tan x + c
ex log (sec x + tan x) + c
ex log sec x + C