# Integrals: Cost function and Marginal Cost

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Given ist the following cost function:

k(x)=x^3-9x^2+29x+35

x= quantity k= cost

Question 1:

At what quantity is the minimum of the marginal cost?

Question 2:

What is the increase of cost if the production is increased from 3 to 4 (integral)?

https://brainmass.com/math/integrals/integrals-cost-function-marginal-cost-5561

#### Solution Preview

Question 1:

As we know the function of the marginal cost is the first derivative of k.Let we use m(x) denote the marginal cost function.So ...

#### Solution Summary

A function is used to calculate marginal cost.

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