Download presentation

Presentation is loading. Please wait.

Published byKaitlyn Speed Modified over 4 years ago

1
Warm-Up (Over 4.5) [1]Evaluate Calculator Free: [2]Find the area of a triangle whose vertices are at (9, 0) (-3, 10) and (5, -6).

2
Warm-Up (Chapter 4 RV) [1] [2] [3]Jim invested $3000 into three 3 accounts at 5%, 8%, and 10% respectively. After one year the interest gained was $255. If the he invested $500 more in the 8% than the 5% how much did he invest in each? (-3.8, 1.4) X + Y + Z = 3000 X = 5% Y = 8% Z = 10%.05X +.08Y +.10Z = 255 Y = X + 500 X = $500 Y = $1000 Z = $1500

3
Lesson 4.7Identity and Inverse Matrices 2 x 2 Identity 3 x 3 Identity Identity Property of Multiplication: Inverse Property of Multiplication: If the product of two matrices is an identity matrix, then the two matrices are inverses. (Not all matrices have an inverse)

4
Finding Inverse of a 2x2 Matrix Where ad-bc does not equal 0. If determinant (ad-bc) =0 then no inverse. NOTE: the value of ad-bc is the determinant of A

5
Practice finding the Inverse (by hand) 1. 3. 2. 4.

6
Example 1Finding an Inverse (Calculator Active) Note:Not all matrices have an inverse. A SINGULAR MATRIX error message entails there is no inverse. a) b)

7
Example 2Verifying Inverses (Calculator Active) a) b)

Similar presentations

OK

Objective: 1d Textbooks pages: 199 – 210 Units: 4.5, 4.6.

Objective: 1d Textbooks pages: 199 – 210 Units: 4.5, 4.6.

© 2019 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google