NCERT Exercise 7.3 Q23 - Integrals
Question: int (sin^2 x - cos^2 x)/(sin^2 x cos^2 x) dx equals (A) tan x + cot x + C (B) tan x + cosec x + C (C) -tan x + cot x + C (D) tan x + sec x + C.
Answer: (A)
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