ä¾é¢æï¼q^n=2
â´q=2^(1/n)
lim(nââ)q
=lim(nââ)2^(1/n)
=2^[lim(nââ)1/n]
=2^0
=1
â´lim(nââ)â³xi
=lim(nââ)q^(i-1)(q-1)
=lim(nââ)2^[(i-1)/n]·(q-1)
âµ1ï¼2^[(i-1)/n]ï¼2
â´2^[(i-1)/n]æ¯æçåéï¼
lim(nââ)(q-1)=0
â´(q-1)æ¯æ ç©·å°ï¼
æ ¹æ®æçåéÃæ ç©·å°=æ ç©·å°
lim(nââ)2^[(i-1)/n]·(q-1)=0
â´lim(nââ)â³xi=0
ä»èï¼lim(nââ)λ=0
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