Find ∫ tan x dx
Find ∫ tan x dx
- A. sec² x + C
- B. log|sec x| + C
- C. log|cos x| + C
- D. log|sin x| + C
Answer: B) log|sec x| + C
Explanation: ∫ tan x dx = ∫ (sin x / cos x) dx. Let cos x = t, -sin x dx = dt. -∫ (1/t) dt = -log|cos x| = log|sec x| + C.
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