   Chapter 5.2, Problem 51E ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919

#### Solutions

Chapter
Section ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919
Textbook Problem
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# Cost The marginal cost of a product is modeled by d C d x  =  4 x   +   1 where x is the number of units. When x =   15 , C =   50 .(a) Find the cost function.(b) Find the cost of producing 50 units.

(a)

To determine

To calculate: The cost function C where the marginal cost is modeled by the equation

dCdx=4x+1 and when x=15, C=50.

Explanation

Given Information:

The marginal cost is modeled by the equation dCdx=4x+1 and when x=15, C=50.

Formula Used:

According to the general power rule for integration,

If u is a differentiable function of x, then

undu=un+1n+1+C,

where n1

Calculation:

Consider the equation dCdx=4x+1.

Integrate dCdx to obtain C.

C=4x+1dx=4(x+1)12dx

Apply the general power rule for integrtion in the above equation,

C=4(x+1)12+1

(b)

To determine

To calculate: The cost of producing 50 units from the cost function of part (a).

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