設數(shù)列{xn}滿足logaxn+1=1+logaxn(a>0,a≠1),若x1+x2+…+x100=100,則x101+x102+…+x200=______.
∵logaxn+1=1+logaxn,∴l(xiāng)ogaxn+1-logaxn=1,
log
xn+1
xn
a
=1,則
xn+1
xn
=a,
∴數(shù)列{xn}是以a為公比的等比數(shù)列,
∵x1+x2+…+x100=100,∴x101+x102+…+x200=a100x1+a100x2+…a100x100
=a100(x1+x2+…+x100)=100a100,
故答案為:100a100
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科目:高中數(shù)學 來源: 題型:

已知函數(shù)f(x)=(x+1)n(n∈N*),l是f(x)在點(1,f(1))處的切線,l與x軸的交點坐標為(xn,0),
(1)若數(shù)列{an}滿足an=(1-xn)(1-xn+1),求數(shù)列{an}的前n項和Sn;
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