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(理)已知以a为首项的数列{an}满足:(1)若0<an≤6,求证:0<an+1≤6;(2...
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(理)已知以a为首项的数列{a
n}满足:
(1)若0<a
n≤6,求证:0<a
n+1≤6;
(2)若a,k∈N﹡,求使a
n+k=a
n对任意正整数n都成立的k与a;
(3)若
(m∈N﹡),试求数列{a
n}的前4m+2项的和s
4m+2.
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