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      /  ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n
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 ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

½Ð±Ð,
¤wª¾¤@¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅé,¦p¦ó­pºâ¬yÅ餧Åé¿n
r:¶ê¬WÅé¥b®|
W:¶ê¬WÅé°ª«×(¶ê¬WÅé¾îª×¤§¼e«×)
H:¶ê¬WÅé¾îª×¤§¬yÅé°ª«×

·q½Ð¦^ÂÐ .·PÁ±z.

 2006-03-26 17:40
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¶ê¬WÅéÅé¿nªº¤½¦¡¡G

©³­±¿n¡Ñ¬WÅ骺°ª

¡×(¥b®|¡Ñ¥b®|¡Ñ£k)¡Ñ¬WÅ骺°ª

©Ò¦³²GÅé·»²G¦n¹³¬O¥H¶ê¬WÅ骺¥]¸Ë,­ì¦]¦p¤U:

¦pªG¦³µ¥¶qªº§÷®Æ°µ¦¨¶ê¬WÅ骺®e¿n¸û¤j
¶ê¬WÅé¡Ö¥ß¤èÅé¡Ö¤T¨¤Åé
¤£¹L¦b­pºâ«á·|µo²{²y§Î®e¿n·|¤ñ¶ê¬WÅé§ó¦n
¦ý²y§Î¤£®e©ö¸m(¬Û«H§Ú¡A§A¤£·|·Q®³¤@­Ó²y§Îªº¬Á¼þªM¸Ë¶¼®Æ)
©Ò¥H®e¾¹¤´¥H¶ê¬WÅ鬰¥D

·íµM,¶ê§Î©Ò¯à©Ó¨üªºÀ£¤O¸û¤j, ¤ñ¦p¹³¨T¤ô³oºØºÒ»Ä¶¼®Æ©ö®ðÃz,¤]´N¬O¤º³¡À£¤O©Ó¨ü¤ñ¸û¤j,¤£¥Î¶ê¬WÅé¨Ó¸Ëªº¸Ü·|Ãz¶}(²y«¬¤£©ö©ñ,©Ò¥H°h¦Ó¨D¨ä¦¸¬O¥H¶ê¬WÅé©Ó¸Ë)

¤ñ¦pª`®g¾¹½¦µ©­ì¦]¤]¬O¦p¦¹:
¤@¡B ¶ê ¤ñ ¦P©Pªøªº¨ä¥¦¥ô¦ó§Îª¬ªº­±¿n¬°¤j¡C¦]¦¹¦P«p¥B¦P­«¶qªº½¦µ©¥i¥H¸Ë³Ì¤j¶qªº¤ô¡C

¤G¡B ¶ê¬WÅ骬ªº½¦µ©¦b²±¤ô®É ªu¶ê©P¤è¦V¦U³B±i¤O¬Û¦P¡C¦]¬°¦¹±i¤O»P¤ôÀ£¥­¿Å¡A©Ò¥H½¦µ©§Îª¬Ã­©w¤£ÅÜ¡C ¨ä¥¦§Îª¬ªº½¦µ©¦b²±¤ô®É ªu©Pªø¦U³B¨ü¤O±¡ªp¤£¦P¦Ó¥B¦³Ås¦±¤Oªº²£¥Í¡C¥¦·|µy·LÅܧΦ¨¶ê¬WÅ骬¡C

 2006-03-26 18:31
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

§Ú¯à¸ÑÄÀ¤W­±³o­ì²z,¦ý±z´£ªº½öªº°ª«× (W)¬O¤°»ò?§Ú¤ñ¸û¤£²z¸Ñ

¹ï¤£°_!¶W¹L§ÚÀ´ªº½d³ò,¦]¬°§Ú¬O¤p¾Ç¥Í,¤£ª¾¦³­þ¦ì°ª¤â¥i¥Hªñ¤@¨B»¡©ú,§Ú¼Æ¾Ç«j±j°Õ!¦ý¦ÛµM¬ì¾Ç­Ë«Ü³ßÅw,½Ð¦U¦ì°ª¤âº¡¨¬§Úªº¦n©_¤ß!

 2006-03-26 18:41
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

©¬´µ¥d­ì²z!

©¬´µ¥d­ì²z(Pascal's principle)¡A¤S¥s¤Ú´µ¥d©w«ß¡A¬yÅé(®ðÅé©Î²GÅé)¤O¾Ç¦Wµü¡C«ü±K³¬®e¾¹¤¤ªºÀR¤î¬yÅ骺¬Y¤@³¡¤Àµo¥ÍªºÀ£¤OÅܤơA²@µL·l¥¢¦a¶Ç»¼¦Ü¬yÅ骺¦U­Ó³¡¤À©M®e¾¹¾À¡Cªk°ê¬ì¾Ç®a¡B¼Æ¾Ç®a¤Ú´µ¥d(1623~1662)­º¥ýÄÄ­z¤F¦¹©w«ß¡CÀ£¤Oµ¥©ó§@¥Î¤O°£¥H¤O§@¥Îªº­±¿n¡C®Ú¾Ú¤Ú´µ¥d­ì²z¡A¦b¤ô¤O¨t²Î¤¤ªº¤@­Ó¬¡¶ë¤W¬I¥[¤@©wªºÀ£¤O¡A¥²±N¦b¥t¤@­Ó¬¡¶ë¤W²£¥Í¬Û¦PªºÀ£¤O¼W¶q¡C¦pªG²Ä¤G­Ó¬¡¶ëªº­±¿n¬O²Ä¤@­Ó¬¡¶ëªº­±¿nªº10­¿¡A¨º»ò§@¥Î©ó²Ä¤G­Ó¬¡¶ë¤Wªº¤O±N¼W¤j¬°­ì¨Óªº 10­¿¡A¦Ó¨â­Ó¬¡¶ë¤WªºÀ£¤O¤´µM¬Ûµ¥¡C²GÀ£´N¬O¤Ú´µ¥d­ì²zªº¹ê¨Ò¤§¤@¡A²GÀ£¨ã¦³¦hºØ¥Î³~¡A¦p²GÀ£¨î°Êµ¥¡C¤Ú´µ¥dÁÙµo²{¡GÀR¤î¬yÅ餤¥ô¤@ÂIªºÀ£¤O¦U¦V¬Ûµ¥¡A³q¹L¤@ÂIªº©Ò¦³¥­­±¤WÀ£¤O¥ç¬Ûµ¥¡C³o¤@¨Æ¹ê¤]ºÙ§@¬°¤Ú´µ¥d­ì²z(©w«ß)¡C

§Úºô¸ô¤W§ä¨ìªº,¬O¤£¬O³o­Ó­ì²z©O?

 2006-03-26 18:51
frog
Just can't stay away



µù¥U¤é: 2006-02-28
µoªí¼Æ: 114


 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¤Þ¤å:

¼g¹D:
¤wª¾¤@¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅé,¦p¦ó­pºâ¬yÅ餧Åé¿n
r:¶ê¬WÅé¥b®|
W:¶ê¬WÅé°ª«×(¶ê¬WÅé¾îª×¤§¼e«×)
H:¶ê¬WÅé¾îª×¤§¬yÅé°ª«×


¤£ª¾§A¬O§_¾Ç¹L¤Ï¤T¨¤¨ç¼Æ,§Y¤T¨¤¨ç¼Æªº¤Ï¨ç¼Æ?
¦¹ÃD­Y¥Î¤Ï¤T¨¤¨ç¼Æ¨Ó¸Ñ¨Ã¤£Ãø,¦ý¥i¯à¤w¸g¶W¥X§A²{¦b©Ò¾Çªº½d³ò,¤£ª¾¬O§_¦³°ª¤â¥i¥H¤£¥Î¤Ï¤T¨¤¨ç¼Æ¨Óªí¥Ü¬yÅ骺Åé¿n

 2006-03-26 21:52­Ó¤H¸ê®Æ
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

·í¶ê¬WÅé¾îª×®É,¤º¸Ë¬yÅé°ª«×ÅܤÆ,¤£ª¾¦p¦ó­pºâ¶ê¬WÅé­ì©w¸q¨º¨âÃ䤧©³­±¿n,µLªk¥H©³­±¿n­¼¶ê¬WÅé°ª(w)­pºâ

 2006-03-27 11:19
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

°ª¤â¦b­þ? °ª¤â¦b­þ? °ª¤â¦b­þ?

Who is an expert?

A skilled mathematician takes years to train.

Where? Where? Where?

 2006-03-27 20:02
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

The problem wasn't resolved so I came to get the bottom of things. Do well and have well, please.

 2006-03-27 20:17
frog
Just can't stay away



µù¥U¤é: 2006-02-28
µoªí¼Æ: 114


 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¥ý©w¸q¥¿©¶¨ç¼Æsin»P¾l©¶¨ç¼Æcos:
¤wª¾ª½¨¤¤T¨¤§Î,­Y±×Ã䬰r,¨¤Aªº¹ïÃ䬰y,¾FÃ䬰x
«hcosA=x/r, sinA=y/r, r^2=x^2+y^2
§Y¤Ï¥¿©¶¨ç¼Æarcsin(y/r)=A©Î¤Ï¾l©¶¨ç¼Æarccos(x/r)=A,§Y¤Ï¥¿©¶¨ç¼Æ»P¤Ï¾l©¶¨ç¼Æ§¡¥iªí¥Ü¦P¤@­Ó¨¤«×A,­þ¤@­Óªí¥Ü¸û²¼ä´N¥Î­þ¤@­Ó
¨Ò¦p:cos(£k/3)=1/2,«harccos(1/2)=£k/3
¥t¥~:¤wª¾¥b®|r»P§¨¨¤A,«h©Ò§¨¶ê©·¤§­±¿n¬°1/2(r^2*A),¦¹¤½¦¡¥i¥Ñ­±¿n¤ñ»´ÃP±À±o
¨ÌÃD·N,¥i§Q¥Î¥H¤W¤T¨¤»P¤Ï¤T¨¤¨ç¼ÆÆ[©À
(1)Hr
¬yÅéÅé¿n¬°
£k*r^2/2+W[r^2*arccos((H-r)/r)-(H-r)*(2rH-H^2)^2]



 2006-03-27 20:58­Ó¤H¸ê®Æ
frog
Just can't stay away



µù¥U¤é: 2006-02-28
µoªí¼Æ: 114


 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¤Þ¤å:

frog ¼g¹D:
¥ý©w¸q¥¿©¶¨ç¼Æsin»P¾l©¶¨ç¼Æcos:
¤wª¾ª½¨¤¤T¨¤§Î,­Y±×Ã䬰r,¨¤Aªº¹ïÃ䬰y,¾FÃ䬰x
«hcosA=x/r, sinA=y/r, r^2=x^2+y^2
§Y¤Ï¥¿©¶¨ç¼Æarcsin(y/r)=A©Î¤Ï¾l©¶¨ç¼Æarccos(x/r)=A,§Y¤Ï¥¿©¶¨ç¼Æ»P¤Ï¾l©¶¨ç¼Æ§¡¥iªí¥Ü¦P¤@­Ó¨¤«×A,­þ¤@­Óªí¥Ü¸û²¼ä´N¥Î­þ¤@­Ó
¨Ò¦p:cos(£k/3)=1/2,«harccos(1/2)=£k/3
¥t¥~:¤wª¾¥b®|r»P§¨¨¤A,«h©Ò§¨¶ê©·¤§­±¿n¬°1/2(r^2*A),¦¹¤½¦¡¥i¥Ñ­±¿n¤ñ»´ÃP±À±o
¨ÌÃD·N,¥i§Q¥Î¥H¤W¤T¨¤»P¤Ï¤T¨¤¨ç¼ÆÆ[©À
(1)H¤p©ór
¬yÅéÅé¿n¬°W[r^2*arccos((r-H)/r)-(r-H)*(2rH-H^2)^2]
(2)H>r
¬yÅéÅé¿n¬°
£k*r^2/2+W[r^2*arccos((H-r)/r)-(H-r)*(2rH-H^2)^2]


¤S¤£¤p¤ß¥Î¨ì¤p©óªº²Å¸¹¤F
¼Ó¤W¤§¥þ¤å¦p¤Þ¤å

 2006-03-27 21:01­Ó¤H¸ê®Æ
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

Mathematics is difficult for me. This problem is so hard to pupils. I try it you mean. I have to spend a few days.

My father said that iit takes ten years to grow trees but a hundred years to bring up a generation of good man. I will remember your wisdom. Thanks!

 2006-03-27 21:59
frog
Just can't stay away



µù¥U¤é: 2006-02-28
µoªí¼Æ: 114


 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¤Þ¤å:

frog ¼g¹D:
(1)H¤p©ór
¬yÅéÅé¿n¬°W[r^2*arccos((r-H)/r)-(r-H)*(2rH-H^2)^2]
(2)H>r
¬yÅéÅé¿n¬°
(£k*r^2)/2+W[r^2*arccos((H-r)/r)-(H-r)*(2rH-H^2)^2]


Sorry,(2)§Ñ¤F­¼¥H¶ê¬WÅ骺°ª«×W,¥t¥~¦A¥[¤W(3)H=rªº±¡§Î,§YÅé¿n¬°¶ê¬W§UÅ骺¤@¥b,³Ì«á¤@¶µ¬°¶}®Ú¸¹¦Ó¤£¬O¥­¤è(¥´¦r¿ù»~)
­×¥¿«á¤§§¹¾ãµª®×¦p¤U:
1)H¤p©ór
¬yÅéÅé¿n¬°W[r^2*arccos((r-H)/r)-(r-H)*(2rH-H^2)^(1/2)]
(2)H>r
¬yÅéÅé¿n¬°
W(£k*r^2)/2+W[r^2*arccos((H-r)/r)-(H-r)*(2rH-H^2)^(1/2)]
(3)H=r
¬yÅéÅé¿n¬°W(£k*r^2)/2

 2006-03-28 23:03­Ó¤H¸ê®Æ
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¦³¤HÀ´¶Ü?

¥i¤£¥i¥H¦A¥Î§ó²³æºâªk.................

 2006-03-29 20:43
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

¡]®°§Î­±¿n¡Ðµ¥¸y¤T¨¤§Î­±¿n¡^X¬W°ª

 2006-03-31 11:28
³X«È








 Re: ¾îª×¤§¶ê¬WÅé,¤º¸Ë¬yÅéÅé¿n

1.°ª«×¤p©ó¥b®|¡G¡]®°§Î­±¿n¡Ðµ¥¸y¤T¨¤§Î­±¿n¡^X¬W°ª

2.°ª«×µ¥©ó¥b®|¡G¬WÅéÅé¿n¡þ2

3.°ª«×¤j©ó¥b®|¡G¡]©³¶ê­±¿n¡Ð®°§Î­±¿n¡Ïµ¥¸y¤T¨¤§Î­±¿n¡^X¬W°ªH

 2006-03-31 11:34


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