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tigou(feixiaolin´ú·¢): ½ð±Ò+5 2015-07-13 17:48:49
lim{f(bn)/bn,n-->¡Þ}
=Lim{f(an*bn/an)/[an*bn/an],n-->¡Þ}
=Lim{f[an*Lim(bn/an)]/[an*Lim(bn/an)],n-->¡Þ}
=Lim{f[an*1)]/[an*1],n-->¡Þ}
=Lim{f(an)/an,n-->¡Þ}
=1
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2Â¥2015-07-13 16:55:27
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2Â¥: Originally posted by peterflyer at 2015-07-13 16:55:27
lim{f(bn)/bn,n-->¡Þ}
=Lim{f(an*bn/an)/,n-->¡Þ}
=Lim{f/,n-->¡Þ}
=Lim{f/,n-->¡Þ}
=Lim{f(an)/an,n-->¡Þ}
=1
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