lim(2n)!/(2n+1)!→0 (n→∞),求证明!

问题描述:

lim(2n)!/(2n+1)!→0 (n→∞),求证明!

解令xn=limt(2n)!/(2n+1)!→0 (n→∞)=limt(2*4*6*.2n)/(3*5*7.*(2n+1))@
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