问题描述:
已知数列{an}中,
(1)Sn=3+2an,求an
(2)a(n+1)=an+2n-1,且a1=1,求an
(3)a(n+1)=a1*2^n,且a1=1,求an
(4)a1=2,a(n+1)=3an+2
下标符号不会打(2)(3)(4)中n+1为a的下标,其余像an,sn,n都为下标,
(1)Sn=3+2an,求an
(2)a(n+1)=an+2n-1,且a1=1,求an
(3)a(n+1)=a1*2^n,且a1=1,求an
(4)a1=2,a(n+1)=3an+2
下标符号不会打(2)(3)(4)中n+1为a的下标,其余像an,sn,n都为下标,
问题解答:
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