Download presentation

Presentation is loading. Please wait.

1
**Do Now: Solve each equation:**

2
Workbook page 21 yes; 7 x ) yes; 2 x ) yes; 1 x 1 9) 11) )

3
Workbook page 21 19) 20) ) $526,054

4
Determinants

5
****To find a determinant you must have a SQUARE MATRIX!!****

Determinant - a square array of numbers or variables enclosed between parallel vertical bars. **To find a determinant you must have a SQUARE MATRIX!!** Finding a 2 x 2 determinant:

6
Find the determinant:

7
Expansion by Minors Always:

8
**Finding a 3x3 determinant: Expansion by Minors Method**

6. Evaluate Step 1: Expand the matrix into 3 pieces. Step 2: Evaluate each 2x2 matrix. Step 3: Simplify. 21

9
**Finding a 3x3 determinant: Diagonal method**

Step 1: Rewrite first two columns of the matrix.

10
**126 - (-52) 126 + 52 = 178 Step 2: multiply diagonals going up!**

-224 +10 +162 = -52 Step 2: multiply diagonals going up! Step 2: multiply diagonals going down! +12 -126 +240 =126 Step 3: Bottom minus top! 126 - (-52) = 178

11
**38 - 38 = 0 Step 2: multiply diagonals going up!**

-18 +50 +6 = 38 Step 2: multiply diagonals going up! Step 2: multiply diagonals going down! - 15 45 + 8 = 38 Step 3: Bottom minus top! = 0

12
**Do Now: Copy down this problem.**

Find the area of a triangle whose vertices are located at (-1, 6), (2, 4), (0, 0).

Similar presentations

Presentation is loading. Please wait....

OK

8 2.

8 2.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Ppt on gestational diabetes mellitus Ppt on tcp/ip protocols Ppt on annual review meeting Ppt on online banking Ppt on history generation and classification of computer Ppt on interest rate risk Training ppt on customer service Ppt on conference call etiquette in the workplace Ppt on gear pump Download ppt on heating effect of electric current