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已知等比数列{an}的前n项和为Sn,满足Sn=bn+r(b>0且b≠1,b,r均为常数)...
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已知等比数列{a
n}的前n项和为S
n,满足S
n=b
n+r(b>0且b≠1,b,r均为常数)
(1)求r的值;
(2)当b=2时,记
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w8D7KrGzeavz3xljIwbnBkjeN4EDABfDbLPa6/DFmQi2/4E99EzLYDAQBEJbbw3lUGSxybdVGQS2
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ncQkeSUxIzFIHTyF6KAXlLx5krURYCc8QVWlESvJkafwI8BWPfdry1OGxHP6V54rNgSAHfWEEYCU
vitWpL2xFrdjhyuvVk144nzjWrk4ZRA20r/CIFyzsjr1B8xhaOK5I4Ck7oFdB804n4ApelFnyOAO
wGIcmNReQAITIHkwGZLGdDAzufwUd7waYFuuINok5zIBJoWD4k8CdJMQ0QStLjExYmuxk6s7H2A4
TFubciXmrcSTPKZLButajLMbYYfFBhiFKO907pXzXh3MAdJgSupUJsAqN5o5Co+f41XVOZ+RfIwW
UnsJSB7ACtBw6nWM4PEVLIA1oDOevB9ZUnbMyfx7eRIL4P3G3fDGbUNF1zaMF+GijvWybQDWBYhV
JORmAIfleFC2FgYYBcm42GyMrnfrAswZG4QnAF8WYMEYlZNOj7osQK5MfQFyPTXruh8uvof0g7zE
pgAAAABJRU5ErkJggg==
)
(n∈N
*),求数列{b
n}的前n项的和T
n.
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