E ȯ ΰ Ȯϴٴ ̾߱Ⱑ Ȯ ȯִ Ŀ ߽ϴ.
*ֺ Ŀ ϱ淡 ʰ ׳ Ŀ ΰ ϰ
*Ӿ E ϰ Ŀϱ ѰŰƿ.
*Ÿ ϴ ֺ ε Ŀ հ߽ϴ.
E ߴµ հ߽ϴ. Ŀ Ÿ Ե ֽô´ հ߽ϴ.
*Ƽ E ֺ ϴºе Ŀ ƿԴ
*忡 , , Ŀ! ϴ Ŀ ƿ!
*ȣ[] Ŀ ǰ ҹԴϴ. Ȱ ֽϱ? ΰ谡 ǽɵ˴ϴ. ʹ մϴ. ̤
*E ! Ŀ հ^^v
*ȯԴϴ. Ŀ Ե ִ ǥ, Ǿϴ.
*ʹƮ Ŀ Ǿ ־ Ŀ ! 3ָ 1հ!
հݻ *Ŀ ϶´ ϸ Ⱑ ưڴٴ ϴ. Ŀ! Դϴ.
Ÿ հ ٵո Ŀ հϴ~!
*Ե ʹմϴ! ߹ ̻ 迡 մϱ!! մϴ!
5 հ Ͽ Ƶ ٷ ϴ. հ߽ϴ! Ŀ մϴ.
*ǰ ! Ұ е Ƽ, Űܴٴ ʿ䰡 ϴ.
2tae****ƴ Ƿ ִ ºθ ! հ Ŀ.
Iror****Ŀ!! Խϴ. Ŀ 鼭 ϴ.
*Ŀ 3ָ 1 հ߾! ǰ ʾƿ. οԵ Ŀ ΰ õҲ
*ȳϼ. 躸̴! | |||
ۼ | 輼ȣ | ÷ | |
β ϴ.
ñ ø ֽʽÿ. ִ° Ϻΰ ڱ и ӵ⸦ ִ° ٸ Դϴ. , ˣࡤܰ 1/3 ϴ ε(X) ִ 쿡, ˣ ϸ, ˣ Xε꿡 ˣ 1/3 ֽϴ. ̶ ˣ ABC 3()̰ ٸ, ABC ˣ 1/3 ϰ ˴ϴ. ᱹ, ABC Xε꿡 Ͽ 1/9 ˴ϴ. , ˣ ϴ , ӵ⸦ û , A B Ǵ C ڱ 1/9 ⸦ û , (1/3) Ͽ( Ͽ) ⸦ û ֽϴ. ο Ͽ, Ͽ ⸦ Ͽ߸ Ⱑ A 1/9 : B : 1/9 : C 1/9 : 1/3 : ܰ 1/3 = 9/9 =1 Ǿ ȿ Ⱑ ֱ Դϴ. , ABC ߿ AB и Ⱑ ǰ C Ⱑ ʴ´ٸ, A 1/9 : B : 1/9 : : 1/3 : ܰ 1/3 = 8/9 Ⱑ Ǿ ü ȿ Ⱑ DZ Դϴ. ٽ ϰ 帮, ˣ Ͽ ˣ ܵ ϴ ε ABC 1/3 ϴ 쿡, , AB и ǰ C ʴ´ٸ, ε ο "A 1/3, B 1/3 Ⱑ ٵ, 2/3 ϴ ϴ. , ӵ Ϻи , ο Ͽ(, Ͽ) A 1/3, B 1/3, C 1/3 Ǿ մϴ. , Ϻΰ ڱ и Ͽ ӵ⸦ ûϴ ʽϴ. , ̷ ڰ ܵ ó ְ ӵ ֽϴ. , A ڽ 1/3 D Ӱ ó ְ(D A ϰ Ǹ, ε DBC 1/3 ϰ Դϴ.), A ϸ A (E) A (1/3) ֽϴ(E A ܵϿٸ, ε EBC 1/3 ϰ Դϴ.). ذ Ǽ̴. ñ ø ٽ ֽñ ٶϴ. , Ͻð..^^ |
ֽϴ
߰ εù 2015.09.23 |
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β ϳ ҰԿФ
п ӵⰡ Ǵ°ǰ?
ι ﶧ
翬 ȵǰ
̴ ϴٰ
Ǹ ٺ
п ӵⰡ
ʴ´ٰ ϼż
θ ߸ϱ Ѱ
ʹ
ݸ Ź帳ϴ٤Ф
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ȣ | ۼ | ȸ | |||
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65214 | ε꼼 | ȳϼ | *ǥ | 2023-10-21 | 371 |
亯 帳ϴ..^^. | 2023-10-23 | 371 | |||
65213 | ߰ ǹ | ߰ | * | 2023-10-21 | 315 |
Դϴ. | 2023-10-23 | 315 | |||
65212 | εù | ǰ 23 4 5 | õ*ȣ | 2023-10-21 | 309 |
亯Դϴ. | ۿ | 2023-10-23 | 309 | ||
65211 | εù | 7ȸǰ ù 24 | * | 2023-10-21 | 290 |
ȳϼ~~ | ȫ | 2023-10-23 | 290 | ||
65210 | ι λƯ | * | 2023-10-21 | 265 | |
亯帳ϴ. | 2023-10-24 | 265 | |||
65209 | εа | 100 2ȸ 26 | * | 2023-10-21 | 369 |
հ մϴ~ | Ű | 2023-10-24 | 369 | ||
65208 | εù | ǰ2ȸ 17 | * | 2023-10-21 | 380 |
ȳϼ~~ | ȫ | 2023-10-23 | 380 | ||
65207 | ε꼼 | 켱 | * | 2023-10-21 | 323 |
亯 帳ϴ..^^. | 2023-10-23 | 323 | |||
65206 | ι λƯ | 3ںȣ | * | 2023-10-21 | 278 |
3 | 2023-10-24 | 278 | |||
65205 | ߰ ǹ | ż븮 | * | 2023-10-21 | 315 |
Դϴ. | 2023-10-23 | 315 |