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#1
05 ¾ÄÉÀÒ¤Á 2009, 23:06
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µÃÕ⡳ ªèÇ´éǤÐ
sin70ͧÈÒsin10ͧÈÒ + cos70ͧÈÒcos10ͧÈÒ ÍÂÙè㹪èǧ¢Í§¢éÍã´
1. (0, 1/4] 2. (1/4 , 1/2] 3. (1/2 , root3/2 ] 4. (root3/2 , 1 ] ·ÓäÁàÃÒ·ÓäÁèÁդӵͺÍèÒ ªèÇ´ÙãËé´éÇÂ˹è͹ФР¢Íá¹Ç¤Ô´´éǹФРà¾×èͤԴ¼Ô´ *-*
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Imagination is more important than knowledge.
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#2
05 ¾ÄÉÀÒ¤Á 2009, 23:23
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¡çÁÕ¹Õè¤ÃѺ
$\sin70^\circ \sin10^\circ + \cos70^\circ\cos10^\circ=\cos (70-10)^\circ=\cos60^\circ=\frac12$
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¤¹ä·ÂÃèÇÁã¨ÍÂèÒãªéÀÒÉÒÇÔºÑµÔ ½Ö¡¾ÔÁ¾ìÊÑÅѡɳìÊÑ¡¹Ô´ ªÕÇÔµ(¤¹µÍºáÅФ¹¶ÒÁ)¨Ð§èÒ¢Öé¹àÂÍÐ (¨ÃÔ§æ¹Ð) Stay Hungry. Stay Foolish.
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#3
05 ¾ÄÉÀÒ¤Á 2009, 23:33
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Áѹ¨Ðä´éªèǧä˹ÍèФÐ
⨷Âì¹Õé໹⨷Âì ¢Í§ QT Á¢ ÍèФÐ
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Imagination is more important than knowledge.
05 ¾ÄÉÀÒ¤Á 2009 23:41 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ nongtum à˵ؼÅ: double post
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#4
05 ¾ÄÉÀÒ¤Á 2009, 23:42
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#3
$\frac12\in (\frac14,\frac12]$ ¤ÃѺ
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¤¹ä·ÂÃèÇÁã¨ÍÂèÒãªéÀÒÉÒÇÔºÑµÔ ½Ö¡¾ÔÁ¾ìÊÑÅѡɳìÊÑ¡¹Ô´ ªÕÇÔµ(¤¹µÍºáÅФ¹¶ÒÁ)¨Ð§èÒ¢Öé¹àÂÍÐ (¨ÃÔ§æ¹Ð) Stay Hungry. Stay Foolish.
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#5
06 ¾ÄÉÀÒ¤Á 2009, 13:35
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µÍº¢éÍ2¤ÃѺ
¤Ô´àËÁ×͹¾Õènongtum àŤÃѺ ÍÔÍÔ
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"Some dream of worthy accomplishments, while others stay awake and do them." ºÒ§¤¹½Ñ¹·Õè¨Ð»ÃÐʺ¤ÇÒÁÊÓàÃç¨ÍÂèÒ§ÊÇÂËÃÙ ã¹¢³Ð·ÕèºÒ§¤¹¡ÓÅѧŧÁ×Í¡ÃзÓ
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