Math M118
Chapter 6: All Integer Method and Matrices

Please contact Maan Omran if you have any question or suggestions.

All-Integer Echelon Method Using Macromedia Flash. 

• Learn the Method Step by Step Using 3 Equations 3 Unknowns

• More examples showing tableaus only:
  Example 1 (3 equations, 3 unknowns)
  Example 2 (3 equations, 3 unknowns)
  Example 3 (3 equations, 3 unknowns)
  Example 4 (2 equations, 2 unknowns)

• Special Cases:
  Case 1: When a pivot = 0
  Case 2: No Solution, Inconsistent
  Case 3: Consistent, Dependent

Using Microsoft Excel with the All-Integer Method to:

• Solve 2 equations

• Solve 3 equations

• Solve 4 equations

• Find the inverse of 2x2 matrix

• Find the inverse of 3x3 matrix
  
  Note 1: You must change the security setup in your MS Excel to let the macros work.

Note 2: It is better if you download each file into your machine and run it from there. You can do that by:

Put the mouse cursor over the link, then click on the right button.
You will get a menu, choose Save Target As
Save the file, then open it in Excel.

Helpful Handout on Finding the Inverse Matrix

Matrix Addition and Multiplication

• Power Point Presentation on Matrix Multiplication:  PPT     Flash   Recommended (177k)

Video Lectures for M118

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