Class 12 Continuity And Differentiability · Mcq Single Correct1 Markschain_and_product_rules
Class 12 Maths · Continuity And Differentiability · Mcq Single Correct #25
Differentiate sec(arctan x).
✅ Step-by-Step Solution
Final Answer: Option (A): x/√(1+x²)
- Since arctan x lies in (−π/2,π/2), sec(arctan x)=√(1+x²), whose derivative is x/√(1+x²).
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