Math 1090.04 Homework 06 Spring 2013 Name Student ID Number: Instructions: Each student is expected to follow the Homework Guidelines described on the course webpage • Solve the Part A Problems on your own paper. • Solve the Part B problems in this handout. • Attach this handout to the front of your homework assignment Reading Assignment: • Chapter 2.4 - Text pages 119 - 125 Part A: • Chapter 2.3 - Text pages: 116-118 Problems: 6, 8, 10, 39-47 Special Instructions for chapter 2.3: – Write the system of equations in matrix form – Write the augmented matrix for this system – Find the solution using Gauss-Jordan Elimination - indicate each step using the “R” notation – Check you work using matrix multiplication • Chapter 2.4 - Text pages: 126-127 Problems: 1-7, 16 - 20, 25-30 Special Instructions for problems 25-30 : – Write the original system of equations in matrix form – Part 1:Finding the Inverse Math1090.004 Homework 06, Page 2 of 3 20 February 2013 ∗ Write the augmented matrix for finding the inverse matrix ∗ Find the inverse using Gauss-Jordan Elimination - indicate each step using the “R” notation ∗ Check you work using matrix multiplication Hint : AA−1 = I – Part 2: Solve the system of equations using the inverse ∗ Solve using matrix multiplication as demonstrated in class ∗ Check your work DO NOT WRITE IN THIS TABLE!!! (It is for grading purposes.) Quantity of Completed Homework Problems: Grade: Homework Quiz out of 30 Math1090.004 Homework 06, Page 3 of 3 20 February 2013 Chapter 2.4: Solving a System of Equations using the Inverse Method 1. Solve the following system using the inverse method x + z = 1 x + y + 7z = 2 x + y + 8z = 3 (1) (2) (3)

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# Math 1090.04 Homework 06 Spring 2013