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pcps2005
Just popping in



µù¥U¤é: 2007-08-26
µoªí¼Æ: 8


 ¼Æ½×°ÝÃD

½Ð¤j®aÀ°À°¦£!!!
1. ¤@­Ó¤»¦ì¼Æº¡¨¬¥H¤U±ø¥ó¡G
a. ¥¦ªº¦U¦ì¼Æ¦r³£¤£¬O¹s
b. ¥¦¬O¤@­Ó§¹¥þ¥­¤è¼Æ
c. ¥¦ªº«e¨â¦ì¼Æ¦r¡B¤¤¶¡¨â¦ì¼Æ¦r¤Î¥½¨â¦ì¼Æ¦r¤À§O¬O§¹¥þ¥­¤è¼Æ(³oùا⥦­Ì¬Ý§@¨â¦ì¼Æ)
¨D²Å¦X±ø¥óªº¤»¦ì¼Æ¡C

2. ¨Ïn^2+n+7¬O§¹¥þ¥­¤è¼Æªº©Ò¦³¾ã¼Æmªº¿n¬O¦h¤Ö¡H

3. ¤@­Ó¦ÛµM¼Æ´î¥h19«á¬O¤@­Ó§¹¥þ¥­¤è¼Æ¡A³o­Ó¦ÛµM¼Æ¥[¤W94«á¤´¬O¤@­Ó§¹¥þ¥­¤è¼Æ¡A«h³o¼Ëªº¦ÛµM¼Æªº­Ó¼Æ¬°¦h¤Ö?

4. ¤@­Ó¥|¦ì¼Æªº¼Æ½X¥Ñ«D¹s°¸¼Æ½X²Õ¦¨¡A¥¦¤S«ê¬O¬Y­Ó¥Ñ°¸¼Æ½X²Õ¦¨ªº¼Æªº§¹¥þ¥­¤è¡A³o­Ó¥|¦ì¼Æ¬O_____?

 2007-09-08 21:01­Ó¤H¸ê®Æ
mico547
Just popping in



µù¥U¤é: 2006-10-30
µoªí¼Æ: 8


 Re: ¼Æ½×°ÝÃD

1. 166464,646416

 2007-09-09 16:47­Ó¤H¸ê®Æ
bubupin
Home away from home



µù¥U¤é: 2007-03-13
µoªí¼Æ: 353


 Re: ¼Æ½×°ÝÃD

1.
³]¦¹¤»¦ì¼ÆABCDEF¬°¤T¦ì¼Æaxb¤§¥­¤è
AB=16®É¡Aaxb¦ô­p¥i¯à¬°401~410¡A¦ý410¤£¦X
¦P²z¡A·íAB=25,36,49,64,81®É¡Ax§¡À³¬°0
¦]¦¹­ì¤T¦ì¼Æ¤§¤Q¦ì¼Æ¦r¥²¬°o
¦p¦¹¥i³]¦¹¤T¦ì¼Æ¬°100a+b¡Aa=4~9¡Ab=4~9
(100a+b)^2=a^2*10000+2ab*100+b^2¡A¦¹®É¤¤¶¡¤G¦ì¼Æ¦rAB=2ab
2ab=k^2¡Aa,b¦Ü¤Ö¨ä¤@¬°2ªº­¿¼Æ¡A¦]¦¹(a,b)=(4,8),(8,4)
¬G¦¹¤»¦ì¼Æ¬°408^2©Î804^2¡A¥ç§Y166464¡A646416

2.
³]n^2+n+7=k^2¡A«h(n+1/2)^2+27/4=k^2
¨âÃä¦P­¼4¥i±o4k^2-(2n+1)^2=27
³]l2kl=A¡Al2n+1l=B¡A A > B > 0
¡@(A+B)(A-B)=27*1=9*3¡A¨ä¸Ñ¬°(A,B)=(14,13),(6,3)
¡@B=13©Î3¡A2n+1=-13,13,-3,3¡A¦]¦¹n=-7,6,-2,1
¬G©Ò¦³mªº¿n=-7*-2*1*6=84

3.
³]¦ÛµM¼Æ¬°A, X^2=A+94¡AY^2=A-19¡AlXl > lYl
¡@¡@¨â¦¡¬Û´î±oX^2-Y^2=113
¡@¡@(lXl+lYl)(lXl-lYl)=113*1¸Ñ±o(lXl¡AlYl)=(57¡A56)
¥N¤J±oA=3155

4.
³]¦¹°¸¼Æ¬°¤G¦ì¼Æ10A+B¤§¥­¤è¡AA=4,6,8¡AB=2,4,6,8
(10A+B)^2=A^2*100+2AB*10+B^2¡A¨ä¤¤2AB¬°°¸¼Æ¡A³]¨ä­Ó¦ì¼Æ¦r¬°k¡Ak¥²¬°°¸¼Æ
B^2=4,16,36,64¡A·íB^2=16,36®É¡A²£¥Í¤§¤Q¦ì¼Æ¦r¬°k+1¡Ak+3§¡¬°©_¼Æ¡A¤£¦X
¦]¦¹B=2©Î8¡A¦ÓA=4,6,8¡A¬G¤G¦ì¼Æ10A+B¥i¯à¬°42,48,62,68,82,88
42,62¥­¤è¬°1***,3***¡A¤£¦X¡A¦AÀˬd48,82,88§¡¤£¦X¡A¬G¦¹°¸¼Æ¬°68^2=4624

µù:©êºp! ³oÃD¤§«e¸Ñ¹L,»~¬°¤G¦ì¼Æ°¸¼Æ¤§¥­¤è,¦]¦¹±o¥t¸Ñ92^2,¦ý²{¥Ñ°¸¼Æ½X²Õ¦¨ªº¤G¦ì¼Æ«h¸ÑÃD¸û¥ý«e²³æ¦h¤F.

 2007-09-10 03:04­Ó¤H¸ê®Æ


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