Business Calculus
(1/4) sec^3 x tan x + (1/2) sec x tan x + (1/2) ln|sec x + tan x| + C
(1/4) sec^3 x tan x + (3/8) sec x tan x + (3/8) ln|sec x + tan x| + C
(1/5) sec^4 x + C
(1/4) sec^3 x tan x + (3/8) sec x tan x − (3/8) ln|sec x + tan x| + C