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Universidade Presbiteriana Mackenzie Automaç˜ao e Controle I

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Automação e <strong>Controle</strong> 1 – Aula 8P – Professor Marcio Eisencraft – julho 2006<br />

19. (CHAPMAN, 2003, p. 51) Resolva para x a equação Ax = B , em que<br />

⎡ 1 2 1⎤<br />

⎡1⎤<br />

A =<br />

⎢ ⎥<br />

⎢<br />

2 3 2<br />

⎥<br />

e B =<br />

⎢ ⎥<br />

⎢<br />

1<br />

⎥<br />

.<br />

⎢⎣<br />

−1<br />

0 1⎥⎦<br />

⎢⎣<br />

0⎥⎦<br />

20. (CHAPMAN, 2003, p. 74) Resolva o seguinte sistema de equações simultâneas para x :<br />

-2.0 X1 + 5.0 X2 + 1.0 X3 + 3.0 X4 + 4.0 X5 - 1.0 X6 = 0.0<br />

2.0 X1 - 1.0 X2 - 5.0 X3 - 2.0 X4 + 6.0 X5 + 4.0 X6 = 1.0<br />

-1.0 X1 + 6.0 X2 - 4.0 X3 - 5.0 X4 + 3.0 X5 - 1.0 X6 = -6.0<br />

4.0 X1 + 3.0 X2 - 6.0 X3 - 5.0 X4 - 2.0 X5 - 2.0 X6 = 10.0<br />

-3.0 X1 + 6.0 X2 + 4.0 X3 + 2.0 X4 - 6.0 X5 + 4.0 X6 = -6.0<br />

2.0 X1 + 4.0 X2 + 4.0 X3 + 4.0 X4 + 5.0 X5 - 4.0 X6 = -2.0<br />

21. Defina o que são autovalores e autovetores de uma matriz. Encontre-os para:<br />

⎡1 0 3⎤<br />

A =<br />

⎢<br />

2 1 5<br />

⎥<br />

⎢<br />

−<br />

⎥<br />

⎢⎣ 0 3 1⎥⎦<br />

5<br />

(1.1)

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