playbr2

Originally posted by sakura310 at  09:58 PM:
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+ l, p% ]' R# j- I對不起$ [$ Z' `* X8 A3 m( h' Q) I8 U  T/ I
請容許我指出錯誤. A7 W9 z5 _( Z8 b9 O5 g

! C* S, v& z: @在...

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" n$ G, B- \0 |- B" v& A咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:
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4 r; m# E5 n. }" O; Q8 f6 u4 Qplayplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ: q4 Z. Y- C' j

' \0 _0 f4 A& N. b+ ~, @個答案可以咁.....
5 v% a' J+ Y( _$ T8 \% X
9 E+ j7 D% d: X" k7 d! v& b1.ab+bc-ac=0
8 K2 M) {" X' S6 k( ta-c=101
/ B. _! Y# _. f' E' A3 r- db=ac/(a+c)=(101c+c^2)/(101+2c)
' O1 @5 P6 g  _1 Y: u設c=101n3 X: @% P# {* U( \0 o
101n代入c
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( W8 L+ U2 Q3 X, m6 f; @4 o) M[101^2*n+(101n)^2]/(101+202n)
3 d, f3 j  `6 [' N! [=[(101^2)n(n+1)]/[(101)(2n+1)]
) A6 \, {. X3 n  w! X=[101n(n+1)]/(2n+1)7 L0 C& m0 \' L4 I2 t3 l1 P7 ?* e& K
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因為a、b、c是正整數
- g0 N! f2 d2 N4 m所以n是正整數
- h# B9 @, Q: c  U所以[101n(n+1)]/(2n+1)是整數
" e0 l- y, p* x9 F- D+ g9 i2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)4 a7 w$ M. @- a% A/ Z7 p
n=50" C2 z8 _5 C9 Q' [- U( y
a=5151  <--a-c=101
: d7 g- a" [; K9 cb=2550  <--[101n(n+1)]/(2n+1)
6 i1 o; u0 {8 oc=5050  <--c=101n6 A! B& ?' F& A# ]( U( {2 M. ?
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
+ m9 T5 a8 q# jFilename: DSC01158.JPG0 ~# S8 \! P4 g6 c
Datetime | Downloaded by | Counts7 V4 D' k" R) M1 ~$ r
2008-01-18 00:25:24 | 阿感 | 2. i3 T& r& ^8 P+ g
2008-01-18 00:24:20 | playbr2 | 2$ x& K6 f' j- w4 K8 D
2008-01-18 00:22:02 | 但丁 | 2
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- ?7 y. A' P* R, P點解大家都down兩次? XD

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1 n* x& S1 Y' p( ~. @8 ]* h% X9 X- F7 o我第一次開睇左2秒就close 左) t$ ?% y) ^5 a5 R( H$ X
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
' y+ A) Z9 }; ~$ L8 A* f* j% hFilename: DSC01158.JPG! f3 ~5 r2 Q# q
Datetime | Downloaded by | Counts: w/ W) n+ U: x: @  q
2008-01-18 00:25:24 | 阿感 | 2
& K+ V7 _$ ^9 U( A$ E2008-01-18 00:24:20 | playbr2 | 2
* v8 c& ]) ~9 Q$ D* r2008-01-18 00:22:02 | 但丁 | 2+ g, b/ F2 a- v0 E- |# F
! r" J+ Z" [# M" O
點解大家都down兩次? XD

. Q) ?9 V0 K/ O" F3 c% a. j9 m+ K

/ V+ T) i" D  e. ~# c快d捉我錯處
. I5 m+ w% q8 B: I8 w9 w* V7 F話吾定我都打錯 + - 符號
3 y1 W5 K" I7 D" L* S+ v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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( S5 j0 j$ M2 d8 L% M' t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:
  n4 ?6 D" w1 g$ ^捉錯處就唔敢當& ^$ V4 `* m9 ]6 M
不過,c=101n哥度(解...

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0 g6 V1 M7 W$ \6 f) h' d) Q& V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
* f# e& j: C2 z1 P! B- d4 r反而適當地調節一下 , 咁會理性好多
$ e/ U: s3 ^9 ?  u% H# {就好似隻game 由12粒珠 加到13粒珠咁
" p# ^. o' ^) k$ Y) F% X% l當''堂''好玩哂  ]) P4 u1 r3 W" `6 U/ y$ J
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p.s. 求''堂''字正寫