slide0102.htm

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<title>第四章</title>
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 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
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 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
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 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>3</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，</b></span><span
 lang=EN-US style='mso-fareast-language:ZH-CN'><b>…</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N</b></span><span
 lang=EN-US style='mso-fareast-language:ZH-CN'><b>-</b></span><span lang=EN-US
 style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
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 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，若都不能整除，则</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N</b></span><span
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 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N=Sqr(N)*Sqr(N)</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，所以，当</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>能被大于等于</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>Sqr(N)</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>的整数整除时，一定存在一个小于等于</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>Sqr(N)</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>的整数，使</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N</b></span><span
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 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>N</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>能否被</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>2</b></span><span
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 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>3</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，</b></span><span
 lang=EN-US style='mso-fareast-language:ZH-CN'><b>…</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>，</b></span><span
 lang=EN-US style='font-family:"Times New Roman";mso-ascii-font-family:"Times New Roman";
 mso-fareast-font-family:"Arial Unicode MS";mso-fareast-language:ZH-CN'><b>Sqr(N)</b></span><span
 style='font-family:宋体;mso-fareast-font-family:宋体'><b>整除即可。&#13;</b></span></div>
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