Week 7

Week 7 notes

by Allison Hess and Carly Budd

**Day 18 - Monday, February 26, 2007**

- 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]

- 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**

- Discovering Computers Quiz 6 assigned to be taken by 10am Thursday, March 1.
- 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.

- PB Wiki Experimenting & Creating www.pbwiki.com
- Sitename is your initials and csm154
- Address is your sitename.pbwiki.com
- Formatting in PB Wiki is in WYSIWYG (What You See Is What You Get) form

page revision: 14, last edited: 22 Mar 2007 23:31