playbr2

Originally posted by sakura310 at  09:58 PM:, u& F) k8 c8 q1 O
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1 Z. x# K/ V! h1 @8 G6 |對不起, c5 [' j& E6 P; {* G% q
請容許我指出錯誤
  h/ f6 }1 x3 s5 b7 q- R0 _
+ E4 z2 x: F* @1 O+ {在...

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+ Y- c# F6 H% H9 o# q* @( _7 k; y; {8 M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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乜咁快手ㄚㄚㄚㄚ2 R9 ?% B: }! n1 r# i
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個答案可以咁.....  p& g; K! S; n/ b. F
0 l! U9 H( Q, Q  r* x1 q8 Z# A/ H
1.ab+bc-ac=0) s# a( ?8 r+ e# V0 d, Z  e
a-c=101
! k* {/ r2 Q$ \5 w' {6 B/ Ob=ac/(a+c)=(101c+c^2)/(101+2c)$ E8 w4 [: x6 S$ H  k. f, g
設c=101n% s( t& h* O3 A9 u7 J4 b' W
101n代入c4 ?! O4 ]9 K9 {7 w' O

) t9 z' c% t4 O; u& d[101^2*n+(101n)^2]/(101+202n)+ s& \9 H5 c7 z4 C9 O2 L
=[(101^2)n(n+1)]/[(101)(2n+1)]
( p; q7 m& W1 e5 \3 B2 q9 w1 l( g=[101n(n+1)]/(2n+1)/ z: J2 ^0 J! P2 @- s; j
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因為a、b、c是正整數! u5 ~3 P+ k, A0 T1 u9 d5 `
所以n是正整數
" a0 i- a( _$ Z9 _5 L所以[101n(n+1)]/(2n+1)是整數
/ c  q, W  ^* d: A( @* H2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
6 [5 r3 O, V6 m* A# En=50+ d- b, d* \5 B; d  G: U+ F, ?
a=5151  <--a-c=101/ L2 ^8 L4 y- v* K1 O# [! k0 a
b=2550  <--[101n(n+1)]/(2n+1)
- m/ S& z  A' G3 ]. Z( k2 vc=5050  <--c=101n- ~! P5 R1 i% [+ [" C2 N
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
* b; g4 H% D7 UFilename: DSC01158.JPG6 B! d7 O0 L( {' R; g& r! z
Datetime | Downloaded by | Counts# `& q& S2 ]0 \* B% \
2008-01-18 00:25:24 | 阿感 | 2
" i' [$ e) h" D; C2 X  N4 }2008-01-18 00:24:20 | playbr2 | 2
8 Z8 G, P% J! p7 a# r/ h2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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: B  q5 [/ s& N8 P, D8 d) J* j0 T  |7 x我第一次開睇左2秒就close 左
+ i6 f+ [1 ~* D' H之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
8 K& N( k; Y: b6 u8 nFilename: DSC01158.JPG
& c) z1 G6 Z! SDatetime | Downloaded by | Counts0 B* p- C% l0 T2 V2 f6 ~
2008-01-18 00:25:24 | 阿感 | 2! Y6 r6 r& X( B; W; q$ u
2008-01-18 00:24:20 | playbr2 | 2$ n1 N8 Y6 X3 o5 ?
2008-01-18 00:22:02 | 但丁 | 2
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0 T# n8 n) ]" b6 B: q, R點解大家都down兩次? XD

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) v1 R5 j6 Q( h" e- X) B+ c快d捉我錯處+ a' P/ x( ]9 P4 M1 V3 |
話吾定我都打錯 + - 符號2 n, T' j) n% N" t5 V7 V/ R6 m' c8 l% ~
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:
  M( k* z" V/ u4 }7 `捉錯處就唔敢當
  k5 [; X& Q/ i不過,c=101n哥度(解...

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6 ]- ?0 r- ~# w) S4 L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' |. J4 l; o; w4 v- P5 t
反而適當地調節一下 , 咁會理性好多; |% x! {3 B+ ~- K4 j* w, ?/ [
就好似隻game 由12粒珠 加到13粒珠咁0 t. r' c7 C, ]; c
當''堂''好玩哂  D3 _8 M5 W8 }& |

6 Y! x; X# t3 }6 e0 _p.s. 求''堂''字正寫