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�� #1

�� 20.1. �� :�) � = �2 � � = �2 + 2; �) � = �2 � � = �2 - 1; �) � = �2 � � = �2 + 5;�) � = �2 � � = �2 -...

�� #2

�� 20.1. �� :�) � = �2 � � = �2 + 2; �) � = �2 � � = �2 - 1; �) � = �2 � � = �2 + 5;�) � = �2 � � = �2 -...

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�� 8 ��, ��:

20.1. �� :

�) � = �2 � � = �2 + 2;

�) � = �2 � � = �2 - 1;

�) � = �2 � � = �2 + 5;

�) � = �2 � � = �2 - 3.

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