Math 1300 Distance: Tips for Assignment 4

Published: Sun, 10/26/14

Did you read my tips on how to study and learn Math 1300?  If not, here is a link to those important suggestions:
Did you see my tips for Assignment 1? Click here.
Did you see my tips for Assignment 2? Click here.
Did you see my tips for Assignment 3? Click here.
Tips for Assignment 4
Here is a link to the actual assignment, in case you don't have it handy:
You need to study Lesson 3 (Matrix Math), Lesson 4 (The Inverse of a Matrix and Applications), Lesson 5 (Elementary Matrices), and Lesson 14 (Markov Analysis) from my Linear Algebra & Vector Geometry book to prepare for this assignment.
Don't have my book?  You can download a free sample of my book and audio lectures containing Lessons 1, 2 and 9:
Question 1
This is just classic matrix math stuff as taught in Lesson 3 of my book. 
Question 2
Classic elementary matrix stuff as taught in Lesson 5 of my book.
Question 3
Classic inverse matrix stuff as taught in Lesson 4 of my book.  To verify that your answer is correct, confirm that the product of A and A-inverse is the Identity matrix.
Question 4
As I discuss in Lesson 3, any system of equations can be written in AX=B form (see page 94).  This is very similar to my question 1 in Lesson 4.
Question 5
This is a Markov Analysis question similar to my questions 1 and 2 in Lesson 14.  Note: when you are finding the steady-state or stable vector, don't worry about the little tricks I use.  Set up the augmented matrix with a row of ones all the way through the first row, then the rest of the augmented matrix is I - T for the coefficients augmented with a column of zeros.  In other words, do Step 1 as I outline at the start of Lesson 14.  At that point, merely row-reduce the way you always do.  Don't worry about the fancy tricks I show about making zero rows and stuff.  Row-reduce like usual, and the system will solve itself.  I really regret over-complicating this lesson by giving too many tricks when it is ultimately just a row-reduction problem.
Question 6
This is a Markov Analysis question similar to my question 4 in Lesson 14.  Note: when you are finding the steady-state or stable vector, don't worry about the little tricks I use.  Set up the augmented matrix with a row of ones all the way through the first row, then the rest of the augmented matrix is I - T for the coefficients augmented with a column of zeros.  In other words, do Step 1 as I outline at the start of Lesson 14.  At that point, merely row-reduce the way you always do.  Don't worry about the fancy tricks I show about making zero rows and stuff.  Row-reduce like usual, and the system will solve itself.  I really regret over-complicating this lesson by giving too many tricks when it is ultimately just a row-reduction problem.