↑ ↑ ↑ Et and positive ex and have negative real part ex and have positive real part 111 1111 →→→→-

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.7: The Inverse Of A Matrix
Problem 31E
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23. The direction field and a few trajectories for a linear system of the form x' = Ax, where
A is a 2 x 2 matrix, are shown below. If ri and r2 denote the eigenvalues of A, what can
you conclude about r, and r2?
3
2
> o
1 1 ↑ ↑ ↑ ↑ ↑
-1
* 1 1 1 ↑ ↑
* 1 1 1 1
* 1 1 ↑ ↑ ↑
-2
-3
* 1. t 1 ↑
1
O r, and r2 are distinct and positive
O rị and r2 are complex and have negative real part
O rị and r2 are complex and have positive real part
O rị and r2 are distinct and negative
rị and r2 have opposite signs
コ→→→→
-
Transcribed Image Text:23. The direction field and a few trajectories for a linear system of the form x' = Ax, where A is a 2 x 2 matrix, are shown below. If ri and r2 denote the eigenvalues of A, what can you conclude about r, and r2? 3 2 > o 1 1 ↑ ↑ ↑ ↑ ↑ -1 * 1 1 1 ↑ ↑ * 1 1 1 1 * 1 1 ↑ ↑ ↑ -2 -3 * 1. t 1 ↑ 1 O r, and r2 are distinct and positive O rị and r2 are complex and have negative real part O rị and r2 are complex and have positive real part O rị and r2 are distinct and negative rị and r2 have opposite signs コ→→→→ -
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