The cost function of a firm is C(x) = 3x² + 5x + 27 (in ₹). The marginal cost when x = 3 is:
The cost function of a firm is C(x) = 3x² + 5x + 27 (in ₹). The marginal cost when x = 3 is:
- A. ₹23
- B. ₹18
- C. ₹27
- D. ₹32
Answer: A) ₹23
Explanation: Marginal cost = dC/dx = 6x + 5. At x = 3, MC = 18 + 5 = 23.
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