imo class 12 application of derivatives

The cost function of a firm is C(x) = 3x² + 5x + 27 (in ₹). The marginal cost when x = 3 is:

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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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