若數(shù)列
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滿足
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,
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(
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),
設
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,類比課本中推導等比數(shù)列前
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項和公式的方法,可求得
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______________
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科目:高中數(shù)學
來源:不詳
題型:解答題
(本題滿分10分)已知數(shù)列
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是公差大于
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的等差數(shù)列,且滿足
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,
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.
(Ⅰ) 求數(shù)列
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的通項公式;
(Ⅱ)若數(shù)列
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和數(shù)列
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滿足等式
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(
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),求數(shù)列
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的前
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項和
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.
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科目:高中數(shù)學
來源:不詳
題型:單選題
數(shù)列
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滿足
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且
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,則
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等于 ( )
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、
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、
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、
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、
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科目:高中數(shù)學
來源:不詳
題型:填空題
在數(shù)列
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中,
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,
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為數(shù)列
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的前項和且
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,則
;
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科目:高中數(shù)學
來源:不詳
題型:填空題
已知數(shù)列{an}的前n項和Sn=2n+n-1,則a1+a3= ▲ .
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科目:高中數(shù)學
來源:不詳
題型:填空題
(理)對于數(shù)列
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,如果存在最小的一個常數(shù)
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,使得對任意的正整數(shù)恒有
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成立,則稱數(shù)列
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是周期為
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的周期數(shù)列。設
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,數(shù)列前
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項的和分別記為
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,則
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三者的關系式_____________________
(文)已知數(shù)列
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的通項公式為
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,那么滿足
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的正整數(shù)
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=________
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科目:高中數(shù)學
來源:不詳
題型:填空題
(文)右數(shù)表為一組等式,如果能夠猜測
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,則
.
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