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0.999...=1
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Posted at 2011-12-07 18:01:01 by л View
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<FONT size="2" face="Tahoma">Ҽ ǥ ϻԴϴ.</FONT><FONT size="2" face="Tahoma"> </FONT> <P><FONT size="2" face="Tahoma"> </FONT></P><FONT size="2" face="Tahoma"></FONT> <P><FONT size="2" face="Tahoma">3/4 ̰ Ҽ ƴմϴ. (Ȯ "Ҽ ǥ ʾҴ") <BR>0.75 ̰ ҼԴϴ. (Ȯ "Ҽ ǥǾ") <BR><BR>̵ Դϴ. , ϳ ̰ װ (Ǵ ̻) · "ǥ" Դϴ. Ѹ "Ҽ̳ ƴϳ" ߸Դϴ. ̰ ġ 亥 â CD ƴϳ ϰ Ͱ ϴ. ߸Դϴ. ݸ, "" "" з ̱ " ?" Ÿմϴ. <BR><BR><BR> 0.9999... ȥ ڽϴ. ǥ ִٰ ϴ ü ߸Դϴ. ֳϸ 0.9999... ... κп "" 9 ִ( ) ̸ װ 9 ̷ 츮 ƴ ָ ä "" 9 Ѵٴ ε ΰ ľ ̶ ؼ ٷ ִ ƴմϴ. ٸ "" ̶ ټ װ ٷϴ. <BR><BR>Ѹ 0.9999... ǥ Ҽ ڿ 9 ´ٴ ̶ ٴ, ǵ˴ϴ. <BR><BR>0.9 <BR>0.99 <BR>0.999 <BR>0.9999 <BR>... <BR><BR> () ᱹ ϳ , ⼭ 1 ϴ. 2 2 ʹ ̻ Ÿ ϴ 1 ʽϴ. ϸ 0.9995 ʹ, ó ٰ ߿ ־ϴ. , 1 Ƶ̴ ֽϴ. ̷ Ȳ 1 "Ѵ" ϰ, 1 "" ̶ մϴ. <BR><BR>ٸ ٽ ڸ, ϴ. 1 ̶ ֺ İ ٴ ֽϴ. Ȯ , <B>1 ̶ ֺ ƹ ٰ ϴ, ٱ Ѱ մϴ.</B> ̷ Ȳ 1 "Ѵ", Ǵ "" 1 ̴ ϴ Դϴ. <BR><BR> 0.9999... ǥ Ÿ (0.999 0.9999999999999 ѼҼʹ ) <B></B> ̶ "" ˴ϴ. ( ٸ ѼҼ ̷ ǵ) ̶ 濡 1 ̰, װ 0.9999... = 1 ̶ ǹϴ Դϴ. <BR><BR>ϸ ϴ. <BR>(1) ѼҼ ѼҼ ٺ ٸ "ǥ "̴. <BR>(2) ѼҼ 0.45 4/10 + 5/100 ϸ ǵȴ. <BR>(3) 0.454545... ѼҼ 0.45, 0.4545, 0.454545,... μ "" ȴ. ( Ҽ ѼҼ̹Ƿ (2) ) <BR>(4) ̷ ѼҼ ǥ ǿ 0.999... 1 . , 0.999... 츮 1 ̶ ǥϴ ǥϴ ϳ ̴. <BR></FONT></P>
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0.999...=1
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592
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