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已知等差数列{an}的公差大于0,且a3>a5是方程x2-14x+45=0的两根,数列{b...
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已知等差数列{a
n}的公差大于0,且a
3>a
5是方程x
2-14x+45=0的两根,数列{b
n}的前n项的和为S
n,且
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEwAAAAjCAYAAAA+NeykAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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el/ixRy2OqOSQq9UhenPOjNzCqzNHhk8w9mX/VdMVqPcAK886UdYEVJ8SPHsIXDH6yODJ/mpfRj0
PynCzkPZalx5nLLx99zkyUWbonAkvF67ZEpHZdzENQy41rnAYjrSf6SL7fD3pIbN3cXa1K4ivRG5
cMTkGp2zJoKDjyfDD8t37iRsRYx0pNS9MyVbpaAoylU6RoBsP50vtvWhWPDx+gXkGigyLyWP3bHv
v5bTNhs61pOAHbtjCApueFHRjylYwkm53qEMDKOGWN+tv/3fqjuOZNCiA5iicwxOwm+NvxIAB89L
/dsc5wPgpPttU/6gf8/44rqLoHT5kzIEBJYjMKVuus1yM+iOrBsOrn62KufHkHLsGQvzEQRGXnmF
ZATBotvLvzc4fLuKbtve+4gD80YoY1ysecRrv3ve7vSAQrKtKyMBH2Fg+25KnfSbG0GD5sC+iPgI
AqvaPRnFrhEDIQMfHfkagfmIAasAUVH9lYJfsrR6IOpBHyFgNaA80/wStMPGcrLytQIV9RECBmfE
lwR3Q+n2EWDOavcIYJ+8JwHGpC3ABBiTAFP8H0+vk2FXBFs3AAAAAElFTkSuQmCC
)
(n∈N
*).
(1)求数列{a
n},{b
n}的通项公式;
(2)记c
n=a
nb
n,求证:c
n+1≤c
n.
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已知等差数列{an}的公差大于0,且a3,a5是方程x2-14x+45=0的两根,数列{bn}的前n项的和为Sn,且
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已知等差数列{an}的公差大于0,且a3,a5是方程x2-14x+45=0的两根,数列{bn}的前n项的和为Sn,且
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已知等差数列{an}的公差大于0,且a3,a5是方程x2-14x+45=0的两根,数列{bn}的前n项的和为Sn,且
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已知等差数列{an}的公差大于0,且a3,a5是方程x2-14x+45=0的两根,数列{bn}的前n项的和为Sn,且
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(Ⅲ)求数列{cn}的前n项和.
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