Class 12 Continuity And Differentiability · Mcq Single Correct1 Markschain_and_product_rules
Class 12 Maths · Continuity And Differentiability · Mcq Single Correct #109
If f′(1)=2 and y=f(ln x), find dy/dx at x=e.
✅ Step-by-Step Solution
Final Answer: Option (D): 2/e
- The chain rule gives y′=f′(ln x)/x; at e this is f′(1)/e=2/e.
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