playbr2

Originally posted by sakura310 at  09:58 PM:
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對不起/ u9 S! U8 D- l' y1 Y: K0 P: @
請容許我指出錯誤/ K8 l; f6 `$ K$ }4 i

( r$ @! y" g5 G/ M+ c$ I6 i在...

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3 B  }  \0 Z3 J# C. J! t- y. L咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:- C) {" I& F$ `( F. _5 {/ J/ r( Q

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playplay你串我?:fig...

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: w% i% f2 c! R1 ~9 @. w$ e乜咁快手ㄚㄚㄚㄚ
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個答案可以咁.....
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1.ab+bc-ac=06 h8 m, t: A3 d3 n0 Z7 Z
a-c=101
- y( X3 o1 p% A) G2 L% |5 ib=ac/(a+c)=(101c+c^2)/(101+2c)
, U4 _1 P4 o# C; V設c=101n
5 v% e' `  n0 K/ P- q' S; l101n代入c
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" |( W  ?7 ?9 S1 X5 X6 ?$ ^[101^2*n+(101n)^2]/(101+202n)
& Q" G* V( }. h& w2 T. t7 C=[(101^2)n(n+1)]/[(101)(2n+1)]3 W/ v" @( c" t/ j
=[101n(n+1)]/(2n+1), c8 Q' ?# p* E+ I4 i9 T% K1 ^
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因為a、b、c是正整數  i+ U" C8 B1 s) i+ u9 I$ ~
所以n是正整數
% ]  T* J) u7 x# Q1 w3 y所以[101n(n+1)]/(2n+1)是整數
  _  ^' J  G/ o2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)9 S) M6 i5 _( k2 k+ F
n=507 g4 o% X3 O& n/ y" R" x0 Z
a=5151  <--a-c=101
6 [4 J  `7 I" w; xb=2550  <--[101n(n+1)]/(2n+1)
0 n6 b$ L+ F( G+ b: v# U! Q3 ?6 rc=5050  <--c=101n8 J. C! N! W0 \* W8 s
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:: X( x* ~4 K, E
Filename: DSC01158.JPG
6 ~7 I: E+ b# [2 _  ^$ l& PDatetime | Downloaded by | Counts
8 |- A! S' V  E* J6 W2008-01-18 00:25:24 | 阿感 | 2
+ @% a8 {: u0 P; B2008-01-18 00:24:20 | playbr2 | 2) S3 l  a" X6 h( P, W
2008-01-18 00:22:02 | 但丁 | 2
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4 ?% B1 p0 v$ a5 a) N' Y/ N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
( ^4 `( K& W5 ~* q之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 W* }8 t: l. R# a/ S* `Filename: DSC01158.JPG
, E1 ]9 b8 m+ g- |% B6 TDatetime | Downloaded by | Counts
# M( y2 Q7 V% x  w  v8 ?6 I7 L2008-01-18 00:25:24 | 阿感 | 29 U% i' _8 u+ P: k
2008-01-18 00:24:20 | playbr2 | 2: Z7 g  ^. d& B0 f! Z
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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& G1 c( H8 p: c5 r快d捉我錯處
/ e$ N6 Q- U* b! o1 }  P話吾定我都打錯 + - 符號6 l, s- `8 m- x
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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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:. h  l+ q# G: u
捉錯處就唔敢當
# o3 J& H: ^+ L8 K. N' ~' a$ K0 O不過,c=101n哥度(解...

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3 M7 A. U, [1 n- z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$ O5 X9 p; a9 S+ j# E' ^. Y1 Z- k
反而適當地調節一下 , 咁會理性好多
0 @4 f8 T7 g' v( j2 o: D就好似隻game 由12粒珠 加到13粒珠咁/ K) b* `* I( o, o( D5 r
當''堂''好玩哂2 p7 H2 k1 Y% V5 j, @  G! Y
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p.s. 求''堂''字正寫