
2023-06-29
个人图书馆-中小学知识学堂 2023-06-29 16:51:32
≠+-∈≠+++=+=-
【资料图】
=-=+
++,则=-
++等于-
-+
+,则+--++=+++-=--≥
≥≥++-≥=≥++∈=-+∈+∈是等比数列
-==≠+∈=∈∈++-----+==-=+=-=+-++等于-+≠+等于--D.
.
=--≥等于++
+∈=
=+-
×
+=,则=+-+--≥≥++,则=-①≥≥+-,则称数列-=,则=--1.
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