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#1
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àŢ¡¡ÓÅѧ¤ÃѺ . .
¾Í´Õä»à¨Í⨷àŢ¡¡ÓÅѧã¹Ë¹Ñ§Ê×͹èФÃѺ áµèàËÁ×͹¨ÐÂѧäÁèà¢éÒ㨠(¡çäÁèà¢éÒã¨àÅÂáËÅÐ 55)
$3^x=4^y=5^z=60^k$ áÅéǤèҢͧ $\frac{1}{x} +\frac{1}{y}+\frac{1}{z}$ à·èҡѺà·èÒäà ¼ÁÃÙé¤ÓµÍº¤×Í $\frac{1}{k}$ áµèäÁèÃÙéÇÔ¸Õ·Ó¤ÃѺ ªèǪÕéá¹Ð·Õ¤ÃѺ |
#2
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ÍéÒ§ÍÔ§:
$\therefore$ $4^y = a^\frac{1}{y}$ $5^z = a^\frac{1}{z}$ $60^k = a^\frac{1}{k}$ $3*4*5 = a^{\frac{1}{x}+\frac{1}{y}+\frac{1}{z}}$ $60= a^{\frac{1}{x}+\frac{1}{y}+\frac{1}{z}}$ $a^\frac{1}{k} = a^{\frac{1}{x}+\frac{1}{y}+\frac{1}{z}}$ µèÍä´é¹Ð¤ÃѺ
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Fortune Lady
10 Á¡ÃÒ¤Á 2010 20:07 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 4 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ Siren-Of-Step |
#3
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¢Íº¤Ø³ÁÒ¡æ¤ÃѺ à¢éÒã¨áÅéǤÃѺ
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#4
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ÍÒ¨ÊÒÁÒöËҤӵͺä´éâ´Âãªélog¹Ð
áµèÇÔ¸Õ·Óµéͧä»ÈÖ¡ÉҾǡÊÑÅѡɳìlog¡è͹¤ÃѺ |
#5
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ãªé log ˹èͤÃѺ ¾Í´ÕÍÂÒ¡àËç¹
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Fortune Lady
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