03 - Matriz inversa - Exercicios

1 Pages • 123 Words • PDF • 354.3 KB

Uploaded at 2021-09-24 11:15

This document was submitted by our user and they confirm that they have the consent to share it. Assuming that you are writer or own the copyright of this document, report to us by using this DMCA report button.

PREVIEW PDF

Exercícios: Matriz inversa 1 2

𝑚

−𝑚

1 2

Obtenha a matriz inversa, se existir, de: 1 1. 𝐴 = ( 3

−1 ) 1

5 2. 𝐴 = ( 2

7 ) 3

4. Dada 𝐴 = [

], calcule 𝑚 de modo que se

tenha 𝐴−1 = 𝐴𝑡 .

1 5. Dada 𝐴 = ( 0

0 ), qual é a matriz 𝐴2 ? E 𝐴111 ? −1

1 −1 3. 𝐴 = ( ) −1 1

Gabarito: 1

1.

𝐴−1 = [

1

4

−

3

4 1]

4

4

1

3 −7 ] −2 5 =∄

2.

𝐴−1 = [

3.

𝐴−1

4.

𝑚=±

5.

𝐴2 = (

√3 2

1 0 ) ; 𝐴111 = 𝐴 0 1