Lesson 22.

NOTE 1: Be sure to read Homework Format, Homework Writing Policy, and Explanations Expected BEFORE writing up your solutions to be turned in.

NOTE 2: When two or more Lessons are to be turned in on the same day, please staple the Lessons separately and turn them in separately.
(This is Lesson 22; if another Lesson is due the same day as this Lesson is due, staple the two Lessons separately and turn them in separately.)
On the other hand, the assignment given below, although from two different Sections of the textbook, is all part of ONE Lesson, Lesson 22, and so all the problems below should be stapled together and turned in together.

Due Friday, October 9.

Sect. 4.4:

Exercise 44(a).

Sect. 4.5:

Exercise 48, modified as follows:

Let the width of the river be  W.
Let the distance of the factory downstream be  D.
Let the cost underwater be  C_u  per unit length (e.g., per mile if  W  and  D  are measured in miles).
Let the cost overland be  C_o  per unit length.

Set up the formula for the total cost as a function of one variable,  x.  You don't have to do any optimization; just set up the formula for the cost.

Please be sure that it is clear what the problem you're solving is and what you're doing. See Homework Format.

NOTE 1: Be sure to read Homework Format, Homework Writing Policy, and Explanations Expected BEFORE writing up your solutions to be turned in.

NOTE 2: When two or more Lessons are to be turned in on the same day, please staple the Lessons separately and turn them in separately.
(This is Lesson 22; if another Lesson is due the same day as this Lesson is due, staple the two Lessons separately and turn them in separately.)
On the other hand, the assignment given above, although from two different Sections of the textbook, is all part of ONE Lesson, Lesson 22, and so all the problems below should be stapled together and turned in together.

As stated on the Course Home Page, all due dates are tentative. Assignments, or parts of assignments, may be postponed to a later date.

Last modified Oct 9, 2009 8:59 AM

Go to Lesson 23 (due Oct 12).

Go to Lesson 130 (due Oct 12).

Go to Lesson 100 (due Oct 19).

Back to Course Home Page