Evaluate: ∫ x sec² x dx
Evaluate: ∫ x sec² x dx
- A. x tan x - log|sec x| + C
- B. x tan x + log|sec x| + C
- C. x sec x - tan x + C
- D. x tan x - log|cos x| + C
Answer: A) x tan x - log|sec x| + C
Explanation: By parts: u = x, dv = sec² x dx. v = tan x. uv - ∫ v du = x tan x - ∫ tan x dx = x tan x - log|sec x| + C.
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