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• H(s) = N(s) D(s) . • 4s� 1 s2 + s� 2 3s2 + 4s� 1 s2 + s� 2 , • A (s� p)q , s A p q 4s� 1 s2 + s� 2 = 1 s� 1 + 3 s+ 2 . 3s2 + 4s� 1 s2 + s� 2 N(s) (s� p1)(s� p2) . . . (s� pn) = A1 s� p1 + A2 s� p2 + · · · + An s� pn . N(s) (s� p1)2(s� p2)3 = A11 s� p1 + A12 (s� p1)2 + A21 s� p2 + A22 (s� p2)2 + A23 (s� p2)3 . 4s� 1 s2 + s� 2 = 4s� 1 (s� 1)(s+ 2) . 4s� 1 (s� 1)(s+ 2) = A1 s� 1 + A2 s+ 2 . s� 1 4s� 1 s+ 2 = A1 + (s� 1) A2 s+ 2 . s = 1 3 3 = A1 + 0 A2 3 , A1 = 1 A1 = 4s� 1 ⇠⇠⇠ ⇠(s� 1)(s+ 2) ���� s=1 , s = 1 A2 = 4s� 1 (s� 1)⇠⇠⇠⇠(s+ 2) ���� s=�2 = �9 �3 = 3. 4s� 1 s2 + s� 2 = 1 s� 1 + 3 s+ 2 . 1 s3 � 2s2 + s = 1 s(s� 1)2 = A1 s + A21 s� 1 + A22 (s� 1)2 A22 = 1 s⇠⇠⇠ ⇠⇠(s� 1)2 ���� s=1 = 1. A1 A1 = 1 �s (s� 1)2 ���� s=0 = 1. A21 1 s(s� 1)2 = 1 s + A21 s� 1 + 1 (s� 1)2 = (A21 + 1)s2 � (A21 + 1)s+ 1 s(s� 1)2 . A21 = �1 1 s3 � 2s2 + s = 1 s(s� 1)2 = 1 s � 1 s� 1 + 1 (s� 1)2 . N(s) D(s) = Q(s) + R(s) D(s) . R(s) 6s4 + 11s3 + 2s2 � 4s� 4 3s2 + s� 2 • 6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 • 3s2 6s4 2s2 6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 2s2 • 6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 6s4 + 2s3 � 4s2 2s2 • ��6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 ��6s4 + 2s3 � 4s2 2s2 9s3 + 6s2 • ��6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 ��6s4 + 2s3 � 4s2 2s2 9s3 + 6s2 � 4s • ��6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 ��6s4 + 2s3 � 4s2 2s2 + 3s 9s3 + 6s2 � 4s 9s3 + 3s2 � 6s • ��6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 ��6s4 + 2s3 � 4s2 2s2 + 3s ��9s3 + 6s2 � 4s ��9s3 + 3s2 � 6s 3s2 + 2s � 4 • ��6s4 + 11s3 + 2s2 � 4s � 4 |3s2 + s� 2 ��6s4 + 2s3 � 4s2 2s2 + 3s+ 1 ��9s3 + 6s2 � 4s ��9s3 + 3s2 � 6s ��3s2 + 2s � 4 ��3s2 + s � 2 s � 2 • 2s2 + 3s + 1 s� 2 6s4 + 11s3 + 2s2 � 4s� 4 3s2 + s� 2 = 2s 2 + 3s+ 1 + s� 2 3s2 + s� 2 , ��3s4 + 10s3 � 2s2 + 2s + 6 |s3 + 3s2 ��3s4 + 9s3 3s+ 1 ��s3 + 2s2 ��s3 + 3s2 �5s2 + 2s ��3s4 + 10s3 � 2s2 + 2s + 6 |s3 + 3s2 ��3s4 + 9s3 3s+ 1 ��s3 + 2s2 ��s3 + 3s2 �5s2 + 2s + 6 3s+ 1 �5s2 + 2s+ 6 ��3s4 + 10s3 � 2s2 + 2s + 6 |s3 + 3s2 + 0s+ 0 ��3s4 + 9s3 + 0s2 + 0s 3s+ 1 ��s3 + 2s2 + 2s ��s3 + 3s2 + 0s + 0 �5s2 + 2s + 6 5s+ 1 s2 + 2s� 15 = 5s+ 1 (s� 3)(s+ 5) = A s� 3 + B s+ 5 . A = 5s+ 1 ⇠⇠⇠ ⇠(s� 3)(s+ 5) ���� s=3 = 2. B = 5s+ 1 (s� 3)⇠⇠⇠⇠(s+ 5) ���� s=�5 = 3. s+ 1 s2 � 2s+ 1 = s+ 1 (s� 1)2 = A s� 1 + B (s� 1)2 . B = s+ 1 ⇠⇠⇠ ⇠⇠(s� 1)2 ���� s=1 = 2. A s+ 1 (s� 1)2 = A s� 1 + 2 (s� 1)2 = As+ (2� A) (s� 1)2 , A = 1 3s� 4 2s2 � 6s+ 4 = 3s� 4 2(s� 1)(s� 2) = A s� 1 + B s� 2 . (2s� 2)(s� 2) A = 3s� 4 2⇠⇠⇠ ⇠(s� 1)(s� 2) ���� s=1 = 1/2. B = 3s� 4 2(s� 1)⇠⇠⇠⇠(s� 2) ���� s=2 = 1. 6s4 + 11s3 + 2s2 � 4s� 4 3s2 + s� 2 = 2s 2 + 3s+ 1 + s� 2 3s2 + s� 2 = 2s2 + 3s+ 1 + s� 2 3 � s� 23 � (s+ 1) = 2s2 + 3s+ 1 + A� s� 23 � + B s+ 1 , A = s� 2 3⇠⇠⇠ ⇠�s� 23�(s+ 1) ���� s= 23 = � 4 15 , B = s� 2 3 � s� 23 � ⇠⇠⇠ ⇠(s+ 1) ����� s=�1 = 3 5 .
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