$\delta$

$\rho$

${\lambda }_1$

${\lambda }_2$

${\lambda }_3$

${\lambda }_4$

$arg{\lambda }_1$

$arg{\lambda }_2$

$arg{\lambda }_3$

$arg{\lambda }_4$

$\left|arg{\lambda }_i\right|$

Stability Result

0.5

0.3

0.7052

$0.1610+0.8957i$

−1.0273

$0.1610-0.8957i$

0

1.3929

$\pi$

−1.3929

$\cancel{>}\frac{\pi }{6}$

Unstable

2

1

0.7969

$0.3485+1.2475i$

−1.4945

$0.3485-1.2475i$

0

1.2984

$\pi$

−1.2984

$\cancel{>}\frac{\pi }{6}$

Unstable

10

20

2.0904

$0.3948+2.5472i$

−2.8800

$0.3948-2.5472i$

0

1.4170

$\pi$

−1.4170

$\cancel{>}\frac{\pi }{6}$

Unstable

50

45

1.6513

$1.2512+3.3994i$

−4.1537

$1.2512-3.3994i$

0

1.2181

$\pi$

−1.2181

$\cancel{>}\frac{\pi }{6}$

Unstable

5

90

$0.0932+3.6640i$

$0.0932-3.6640i$

3.5685

−3.7548

1.5454

−1.5454

0

$\pi$

$\cancel{>}\frac{\pi }{6}$

Unstable