Week 7

Week 7 notes

by Allison Hess and Carly Budd

Day 18 - Monday, February 26, 2007

1. We began Matrices
• Matrix- a rectangular array of numbers
• Looks like rows and columns of numbers within parenthesis and size is given by # of rows x # of columns [ex. 2x2]
2. Matrices in Excel:
• Highlight matrix and name it in upper left corner, then hit enter. Each matrix must have a different name in a given workbook.
• To multiply matrices, highlight the given area the result will take up and type in: =mmult(array1,array2) and then hit Ctrl, Shift, and Enter. To get names of matrices, use the "array1" links or by hitting F3.
• To find inverse of a matrix type in: =minverse(array1) Note: Inverses of matrices only work if the matrix is square.

Day 19 - Wednesday, February 28, 2007

1. Discovering Computers Quiz 6 assigned to be taken by 10am Thursday, March 1.
2. Continued work on Matrices

Day 20 - Friday, March 2, 2007
Assignment 3 assigned: TI-89 Calculator Assignment using the tutorial found on the class wiki.

1. PB Wiki Experimenting & Creating www.pbwiki.com
• Sitename is your initials and csm154