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If C(x)=x3−52x2+10C(x) = x^3 - \frac{5}{2} x^2 + 10 represents the total cost of producing x unit by car manufacturing company. The slope of the marginal cost curve at x=3x = 3, will be

Solution

✅ Correct Option: 3

Marginal cost MC=C′(x)=3x2−5xMC = C'(x) = 3x^2 - 5x. Slope of MC =MC′(x)=6x−5= MC'(x) = 6x - 5. At x=3x = 3: 6(3)−5=136(3) - 5 = 13.

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