Finite Lab 4

Finite Lab 4 - Math 120 Spring 2008 Brodnick Lab #4: 3.3...

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Math 120 Spring 2008 Brodnick Lab #4: 3.3 & 3.5 1. Correctly fill in the appropriate formula for the following types of problems: #1 Answer: If you are given a system of equations, and you’re asked to solve the system using matrix inversion, you’d use this formula: If you are given information about sectors of an economy and their external demand, and you’re asked to find the production vector, you’d use this formula: 2. Compute and simplify the inverse of the following matrix: - - 3 5 4 c Use row operations or the shortcut formula for a 2 × 2. (2 points) #2 Answer: 3. Determine the inverse of - - - = 13 8 4 7 5 2 11 6 3 D and list the entry given by 23 1 - d (be exact – don’t round). #3 Answer: 4. Use matrix inversion to solve the following equation: - = - - - 15 0 13 6 4 1 2 3 2 4 2 1 z y x #4 Answer: x = _______ y = _______ z = _______

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5. Consider a simple economy consisting of three sectors: food, clothing, and shelter.
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This note was uploaded on 04/07/2008 for the course MAT 120 taught by Professor Brodnick during the Spring '08 term at Illinois State.

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Finite Lab 4 - Math 120 Spring 2008 Brodnick Lab #4: 3.3...

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