playbr2

Originally posted by sakura310 at  09:58 PM:* g# J6 z& c7 ]2 K" l$ h7 {
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4 g/ |/ t' i( g- w; ^' m6 p" S對不起! a& n0 d' M9 G: V% m$ I) [
請容許我指出錯誤1 [0 L5 L/ S. n/ a
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在...

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% u! f/ I2 a7 `咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:
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+ @' [$ Y3 b) P8 L( D8 ~/ S6 @
playplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ
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個答案可以咁.....6 q, u8 O" K0 m; o5 n$ E

8 W) D. P' N! K. }1.ab+bc-ac=0
* M) K! q1 j5 ga-c=1014 W: _% m) ^8 P, W
b=ac/(a+c)=(101c+c^2)/(101+2c)9 _9 |+ o% Y9 q9 ?7 g# Y
設c=101n
: R3 s+ [1 |# l5 B& d; w101n代入c
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[101^2*n+(101n)^2]/(101+202n)- J6 R# m: c; T  \8 q/ w
=[(101^2)n(n+1)]/[(101)(2n+1)]
9 w$ O+ J8 a0 J. N0 z=[101n(n+1)]/(2n+1)0 R1 x) Y$ K; N; V8 I
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因為a、b、c是正整數
! n& E" e6 _, M0 w所以n是正整數
$ A6 m% o4 q0 E+ d+ Y/ A9 `所以[101n(n+1)]/(2n+1)是整數" p5 j8 {  f4 g( m7 k, J
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
5 e: C0 h4 ], `+ Y# _) yn=508 j8 U% x2 D- g# ~6 T7 Q& C
a=5151  <--a-c=101
1 O9 I3 W% O% m7 {- d* k! `$ jb=2550  <--[101n(n+1)]/(2n+1)
6 a4 E9 T0 J# f7 q* ^3 P' {c=5050  <--c=101n
" j" r, W& Z7 v答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:( F! q, }  g7 Q0 d( V, L$ x+ w
Filename: DSC01158.JPG
& {% e4 I; \6 F% z1 R% d" S1 }Datetime | Downloaded by | Counts
2 I4 l; N0 ~! H3 ~# ]4 w" W) p2008-01-18 00:25:24 | 阿感 | 26 ^5 o" J0 M; |6 s& z8 F: D
2008-01-18 00:24:20 | playbr2 | 2
" |% c6 a3 U6 s/ L' J2 e2008-01-18 00:22:02 | 但丁 | 2) Y: C, N) i; y& E

) t9 E% o0 H) }, \) e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2 @! `2 t$ c9 l# h  t
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:$ t# T" _/ `0 [1 D1 p/ ^" p: @
Filename: DSC01158.JPG
# x# o# {0 N; C* ~/ Y( c) D2 u4 NDatetime | Downloaded by | Counts
6 G7 O6 _' Q9 V5 h- C, I) f# G1 E2008-01-18 00:25:24 | 阿感 | 2  N% v' g+ ]0 f& D7 G- H, I6 `
2008-01-18 00:24:20 | playbr2 | 2
3 o3 y& i9 b9 Q/ O& L2 ~- s2008-01-18 00:22:02 | 但丁 | 2
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% U  B. t7 u# {6 |8 n+ d點解大家都down兩次? XD

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; r4 d% Q/ F% J0 Z快d捉我錯處
: P+ L$ g1 g" M: O/ `7 l/ X* Y話吾定我都打錯 + - 符號
0 b" R8 o4 z1 \- W0 M係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:/ |5 x# s+ P1 x* F9 c9 U4 }

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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:
5 i6 Q9 s( q) s% V( U8 Q捉錯處就唔敢當
4 c& A0 o" O8 V不過,c=101n哥度(解...

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/ ^0 f, f- A) D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9 z# H4 {/ O% T% S
反而適當地調節一下 , 咁會理性好多
8 s% e- y& t! g/ ]( L1 r就好似隻game 由12粒珠 加到13粒珠咁
. K. f0 P" X; q當''堂''好玩哂
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p.s. 求''堂''字正寫