Cost Function and Marginal Cost Quiz
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Questions and Answers

What is the formula for marginal cost (MC) derived from the total cost function $C(x) = 0.0013x^3 + 0.002x^2 + 5x + 2200$?

  • MC = 0.0013x^2 + 0.004x + 5
  • MC = 0.00039x^2 + 0.004x + 5 (correct)
  • MC = 0.00013x^2 + 0.002x + 5
  • MC = 0.00039x^2 + 0.002x + 5

What is the first step in calculating the marginal cost when 150 items are produced?

  • Substituting $x = 150$ into the cost function $C(x)$
  • Finding the average cost for producing 150 items
  • Calculating the total cost for producing 150 items
  • Taking the first derivative of the cost function $C(x)$ (correct)

After calculating, what is the marginal cost when producing 150 items?

  • 13.975 rupees
  • 14.375 rupees (correct)
  • 15.000 rupees
  • 14.575 rupees

What does the term 'marginal cost' represent in the context of production?

<p>The total cost of producing one additional unit (D)</p> Signup and view all the answers

Which of the following statements about the marginal cost function is correct?

<p>It increases at increasing rate with higher levels of output. (A)</p> Signup and view all the answers

Flashcards

Marginal Cost

The approximate cost of producing one additional item.

Total Cost Function

Represents the total cost of producing a given number of items.

Derivative of a function

The rate of change of a function with respect to its variable.

Finding Marginal Cost

Differentiate the total cost function to determine the marginal cost.

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Application of Derivatives (Marginal Cost)

Using the derivative of a cost function to determine the additional cost of making one more unit.

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Study Notes

Cost Function and Marginal Cost

  • The cost function for producing 𝑥 items in a factory each day is given by 𝐶(𝑥) = 0.00013𝑥³ + 0.002𝑥² + 5𝑥 + 2200.
  • Marginal cost (MC) is the derivative of the total cost function with respect to the quantity produced (𝑥).
  • To find the marginal cost, differentiate the cost function: MC = d𝐶(𝑥)/d𝑥.
  • MC = 0.00039𝑥² + 0.004𝑥 + 5.
  • The marginal cost when 150 items are produced is found by substituting 𝑥 = 150 into the marginal cost equation.
  • MC(150) = 0.00039(150)² + 0.004(150) + 5 = 8.775 + 0.6 + 5 = 14.375.

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Description

Test your understanding of cost functions and marginal cost calculations. This quiz will challenge you to differentiate cost functions and evaluate marginal cost at a given production level using the provided formulas.

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