playbr2

Originally posted by sakura310 at  09:58 PM:) A. r# \/ t- w$ e7 q7 Y" E) z

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對不起
+ w6 I! ^& K7 l4 u# V/ n請容許我指出錯誤
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* U! O% u9 f8 X* ^' a/ a% {# _在...

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咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:
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playplay你串我?:fig...

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/ L7 Z* v) L: P- V; s0 t乜咁快手ㄚㄚㄚㄚ  F: [7 m! v+ o8 @: _7 z0 B
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個答案可以咁.....
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1.ab+bc-ac=0: K+ X" @% @; z2 R  \
a-c=101
! a8 V) a7 Z4 c3 Gb=ac/(a+c)=(101c+c^2)/(101+2c)# D& Q: h( s8 n# w
設c=101n( [& o* W' z; P( T5 |# q3 X
101n代入c
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8 j" g: x7 u4 L/ T$ G$ k[101^2*n+(101n)^2]/(101+202n)3 w: k) S# @8 Q$ M- D
=[(101^2)n(n+1)]/[(101)(2n+1)]+ c1 v4 M7 Z3 b- U- t7 `4 e! d
=[101n(n+1)]/(2n+1)
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因為a、b、c是正整數
/ D. r% K- ?( A' d! ~所以n是正整數
( p. Y# {, R. B9 S5 b' [( ]+ [所以[101n(n+1)]/(2n+1)是整數$ d3 E% {, m; E/ `, Z- ]5 b3 s+ K
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
* T+ e1 K! U# ]0 g6 e  `. H% kn=50
! r, @3 R$ F5 }% u" P* @a=5151  <--a-c=101; V8 _4 k: z2 Y6 [
b=2550  <--[101n(n+1)]/(2n+1)
& h, v/ U0 [' p1 M! l" y# {. r' Ac=5050  <--c=101n
. {% s/ y1 i. n) n/ ^# n. t答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
1 {3 k: y) y, T; m( HFilename: DSC01158.JPG2 F7 c4 O, g  ?# X4 R
Datetime | Downloaded by | Counts
0 o- s' r9 Q' S% f; [. S9 T. Z5 X2008-01-18 00:25:24 | 阿感 | 2: `$ l/ h0 A/ w; Y3 r4 D' c* Z
2008-01-18 00:24:20 | playbr2 | 2. X- ]- S4 c8 j3 a1 b# X9 @8 J
2008-01-18 00:22:02 | 但丁 | 2) S' W; w' _- v( U/ v$ }) Z
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點解大家都down兩次? XD

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我第一次開睇左2秒就close 左, F! k. z! a  l5 s' C9 I
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
% Q% ?& u4 |7 b( W$ F- L. y' ^Filename: DSC01158.JPG
8 s6 @% u1 n6 i# nDatetime | Downloaded by | Counts
4 b7 l* g1 Z6 [8 n2008-01-18 00:25:24 | 阿感 | 25 o5 @- y& c4 R0 O$ H
2008-01-18 00:24:20 | playbr2 | 2% w- U# r& |3 ^1 w
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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! p: ?5 J4 N* {9 U" J快d捉我錯處  W+ F- ~7 T4 _; l3 @4 U* m
話吾定我都打錯 + - 符號$ z6 F5 z0 y; O" D  L2 F
係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:
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# E* a6 {7 j- u7 ?不懂的話就問playplay,佢會知答案

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playbr2

Originally posted by sakura310 at  06:47 AM:: r* _7 w9 \' V+ l
捉錯處就唔敢當
/ V7 a, l  K4 M7 a9 |不過,c=101n哥度(解...

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都係睇餸食飯姐 , 無理由因為題目冇同你假設就下下大包圍架
  |! n* n# l- P反而適當地調節一下 , 咁會理性好多
7 Y7 e3 a" ~; L' N) I' ?+ G就好似隻game 由12粒珠 加到13粒珠咁# u' N7 C% E* |
當''堂''好玩哂
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p.s. 求''堂''字正寫