设数列{an}满足a1=√a(a>0),an+1=1⼀2(an+a⼀an),证明数列{an}收敛并求liman

2025-01-20 02:35:38
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回答1:

...由a1=√a可得a2=1/2(√a+a/√a)=√a,an=√a