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中档大题练4(限时40分钟)1.数列{an}的前n项的最大值记为Mn,即Mn=max{a1,a2,…,an};前n项的最小值记为mn,即mn=min{a1,a2,…,an},令pn=Mn-mn,... 2025-06-221055101.65 KB6页254
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