数学归纳法证:1/ln2+1/ln3+1/ln4 +…1/ln(n+1)>n/n+1 求用数学归纳法证明这个式子:证:1/ln2+1/ln3+1/ln4 +…1/ln(n+1)>n/n+1我只要用数学归纳法...函数法和放缩法我都会
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