NCERT Class 12 · Ch 6 Exercise 6.1 · Q18
NCERT Class 12 Maths · Chapter 6 Applications Of Derivatives · Exercise 6.1 Question 18
If R(x)=3x²+36x+5, find marginal revenue at x=15.
💡 Concept Hints
- Identify the domain and the inner and outer functions, or the relevant one-sided limits.
- Apply the appropriate differentiation or limit rule, keep all chain factors, and check exceptional points.
✅ Step-by-Step Solution
Final Answer: D: 126.
- R′(x)=6x+36.
- R′(15)=90+36=126.
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