   Chapter 9.9, Problem 9E ### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042

#### Solutions

Chapter
Section ### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042
Textbook Problem

# In Problems 9-16, cost is in dollars and x is the number of units. Find the marginal cost functions for the given cost functions. 9.   C ( x ) = 40 + 8 x

To determine

To calculate: The marginal cost function for the given total cost function C(x)=40+8x.

Explanation

Given Information:

The given cost function is C(x)=40+8x.

Formula used:

According to the power rule, if f(x)=xn, then,

f(x)=nxn1

According to the property of differentiation, if a function is of the form, g(x)=cf(x), then,

g(x)=cf(x)

According to the property of differentiation, if a function is of the form f(x)=u(x)+v(x), then,

f(x)=u(x)+v(x)

The derivative of a constant value, k, is

ddx(k)=0

Calculation:

Consider the provided total cost function,

C(x)=40+8x

The marginal cost of a cost function is found by differentiating the total cost function, and it is denoted by MC¯

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