Math 123 Finite Mathematics Test 3 Review Sheet FALL 2007
Michael A. Unseren, Instructor
Test 3 Date: Friday Nov. 9, 2007 (closed book, closed note, calculator permitted (no TI89
calculators and no sharing of calculators permitted)
Bring a ruler or straightedge to the exam (to neatly graph boundary equations
and feasible regions.)!
Also, bring pens/pencils of varying colors to clearly distinguish between the
graphs of boundary equations drawn on the same set of axes.
Essential Concepts for Success on Test 3:
Section 3.6
•
Who was Wassily Leontief and what did he accomplish?
•
Leontief “Open” InputOutput Models
•
What is the difference between an open model and a closed model (pg 227)
•
What does the number on an arrow in a Leontief Model signify. See bottom on page 227
•
Given a Leontief model with two or three sectors, be able to define the variables x_1, x_2,
…, y_1, y_2,… set up the X and Y column matrices and the technology matrix.
•
Given a word description of a problem, find the Leontief graphical model and mathematical
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 Spring '08
 Unseren
 Math, Operations Research, Linear Programming, Optimization, Constraint, Wassily Leontief

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