问题描述:
高一数学在线急.. 已知数列{an}满足a1=1,a(n+1)-2an=2^n,求an
1,已知数列{an}满足a1=1,a(n+1)-2an=2^n,求an
2,已知数列{an}满足a(n+1)=2an-3,求an
3,求数列2-1,2^2-2,2^3-3,...,2^n-n,的前n项和
三道题求过程,分不多了...
1,已知数列{an}满足a1=1,a(n+1)-2an=2^n,求an
2,已知数列{an}满足a(n+1)=2an-3,求an
3,求数列2-1,2^2-2,2^3-3,...,2^n-n,的前n项和
三道题求过程,分不多了...
问题解答:
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