计算:limn^2[(k/n)-(1/n+1)-(1/n+2)-……-(1/n+k)]
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计算:limn^2[(k/n)-(1/n+1)-(1/n+2)-……-(1/n+k)]
(其中k为与n无关的正整数)
(其中k为与n无关的正整数)
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计算:limn^2[(k/n)-(1/n+1)-(1/n+2)-……-(1/n+k)]
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