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lilihurry(feixiaolin´ú·¢): ½ð±Ò+5, ÇÉ 2013-12-15 09:45:49
£¨1-sqrt(2))^n=£¨1-sqrt(2))^n*£¨1+sqrt(2))^n/£¨1+sqrt(2))^n=(-1)^n/£¨1+sqrt(2))^n=(-1)^n/sqrt(an+bn)
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3Â¥2013-12-15 09:09:49
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feixiaolin

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1+sqrt(2)=a1+b1*sqrt(2)
[1+sqrt(2)]^2=3+2*sqrt(2)=a2+b2*sqrt(2)
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[ Last edited by feixiaolin on 2013-12-15 at 09:42 ]
2Â¥2013-12-14 23:19:56
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