MirRor
19 ÁԶعÒ¹ 2008, 21:29
¢éÍ 26. ãËé x = $\frac{1}{2} + \frac{2}{3} + \frac{3}{4} + \frac{4}{5}$
y = $\frac{100! - 99! - 98!}{100! + 99! + 98!}$
áÅéÇ¢éÍã´¶Ù¡µéͧ
1. y-x = $\frac{1109}{300}$
2. x-y = $\frac{521}{300}$
3. y+x = $\frac{512}{300}$
4. x+y = $\frac{1019}{300}$
àÍèÍ áÅéÇÍÕ¡ÍÂèÒ§ ªèǺ͡ÇÔ¸Õ¡ÒÃËÒ $\frac{100! - 99! - 98!}{100! + 99! + 98!}$ ¨Ð¢Íº¾ÃФسÍÂèÒ§ÊÙ§¤ÃѺ :please:
(Íѹ·Õè¨ÃÔ§¡çãªéÇÔ¸Õ´Ö§µÑÇÃèÇÁàÍÒ ÍèйРáµè ¶éÒ ËÒ¡ÊÁÁµÔ⨷Âìà»ç¹ $\frac{50!-100!}{50!+100!}$ ¡çÅÓºÒ¡àÍÒ¡ÒÃàÅ :aah:
y = $\frac{100! - 99! - 98!}{100! + 99! + 98!}$
áÅéÇ¢éÍã´¶Ù¡µéͧ
1. y-x = $\frac{1109}{300}$
2. x-y = $\frac{521}{300}$
3. y+x = $\frac{512}{300}$
4. x+y = $\frac{1019}{300}$
àÍèÍ áÅéÇÍÕ¡ÍÂèÒ§ ªèǺ͡ÇÔ¸Õ¡ÒÃËÒ $\frac{100! - 99! - 98!}{100! + 99! + 98!}$ ¨Ð¢Íº¾ÃФسÍÂèÒ§ÊÙ§¤ÃѺ :please:
(Íѹ·Õè¨ÃÔ§¡çãªéÇÔ¸Õ´Ö§µÑÇÃèÇÁàÍÒ ÍèйРáµè ¶éÒ ËÒ¡ÊÁÁµÔ⨷Âìà»ç¹ $\frac{50!-100!}{50!+100!}$ ¡çÅÓºÒ¡àÍÒ¡ÒÃàÅ :aah: