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$�� 796. � �� (a_n) �� a_n, a_1 � q, ��:�) {a_4-a_2=0,6, a_5-a_3=1,2, S_n=12,7};�) {a_1+a_3=5,2, a_2+a_4=1,04,...$

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796. � �� (a_n) �� a_n, a_1 � q, ��:

�) {a_4-a_2=0,6, a_5-a_3=1,2, S_n=12,7};

�) {a_1+a_3=5,2, a_2+a_4=1,04, S_n=6,24}.

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