playbr2

Originally posted by sakura310 at  09:58 PM:
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/ U- V$ l% S; g9 N; p2 w3 @對不起
; y' s/ x  m9 T+ _8 ]0 H) p請容許我指出錯誤: |  y# X  z8 D  d' S( u

/ l, C* G+ n; U( y$ s  g在...

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2 [6 |  {' m' ]! H8 @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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! B6 Z( a) f( C: M' p乜咁快手ㄚㄚㄚㄚ, _  V; o! M- s& V" @+ r4 z
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個答案可以咁.....1 B; a, ^* s; K+ C0 s1 G5 U' u* B) g: Y

% g$ R8 E- g, g. K  @1.ab+bc-ac=0
3 t4 R3 J- H- u" ]; _8 Ca-c=101" E2 F1 V. j1 ]$ O' @( F7 F
b=ac/(a+c)=(101c+c^2)/(101+2c)
: M9 _' |8 N" x2 T: o. T. x! \設c=101n
! D& i6 b3 G9 K101n代入c2 \% @% j& B: a. m7 w, X" R
$ t2 a9 b& {7 k' L9 x/ U; `
[101^2*n+(101n)^2]/(101+202n), c6 L3 w* S; S4 J* P' c1 `
=[(101^2)n(n+1)]/[(101)(2n+1)]
# K5 O# C) r1 Z6 I=[101n(n+1)]/(2n+1)* T0 m3 q' u& @' s# T( Z

* K* V+ ~, X3 y, {$ e6 E6 X4 f/ C; v因為a、b、c是正整數6 Q6 E: g8 j$ \+ {; ]
所以n是正整數8 q. K5 M. n- U) ]' a
所以[101n(n+1)]/(2n+1)是整數
! `/ P) g2 ?/ }6 i- i: x: k/ ^$ R$ N2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
, |# _+ o# m5 ]# n" c2 }, mn=50
) ]/ y6 x# [: I6 ia=5151  <--a-c=1016 h9 A3 e# `. A2 }
b=2550  <--[101n(n+1)]/(2n+1)
. D, l. |) {& g8 ~' Tc=5050  <--c=101n
0 @; V- t, g/ l6 @6 @答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
6 B7 a. R2 J' g9 NFilename: DSC01158.JPG3 ^# I1 i& Z& W3 {; c
Datetime | Downloaded by | Counts( v9 m% G* ~! X. i
2008-01-18 00:25:24 | 阿感 | 2' ^0 P) s. Q, x4 u# q, T
2008-01-18 00:24:20 | playbr2 | 22 ^9 D! a6 W6 D- r
2008-01-18 00:22:02 | 但丁 | 2) D% l% ^  f5 x# W
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點解大家都down兩次? XD

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% F- n. C4 |+ N6 q& m我第一次開睇左2秒就close 左
# W3 ]1 t3 o" g5 r9 F) U( _6 ~之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
9 ]. D) }/ C0 t4 x- U, oFilename: DSC01158.JPG
) o7 z( ^; P! u; z8 x# n+ _1 M7 kDatetime | Downloaded by | Counts" i9 ~4 @6 _, \% Z! r0 f2 i$ m
2008-01-18 00:25:24 | 阿感 | 2  m$ X1 K# }/ t7 z" G" d
2008-01-18 00:24:20 | playbr2 | 2
! P7 k( \0 x; u% t/ a' s, Z2008-01-18 00:22:02 | 但丁 | 2+ {, `7 [! k; i0 `: \6 x
% ^( v) t3 `! [! K1 d9 `
點解大家都down兩次? XD

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7 L- K. p+ m1 \: v# ^9 k快d捉我錯處  s# G" m" l# \' a3 N
話吾定我都打錯 + - 符號
, d9 o1 _+ b8 z4 \) H& R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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+ v7 _2 }- r' o4 k* {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 P' G% l" E% V. Q' r捉錯處就唔敢當
! K" V/ `# p+ }3 u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
" F4 |6 ?4 w2 ?/ J2 ~6 B0 e* ^  \反而適當地調節一下 , 咁會理性好多
% j; x& H" c4 a/ @% A就好似隻game 由12粒珠 加到13粒珠咁
4 \5 J6 U3 T& n& f: [$ D當''堂''好玩哂9 e7 U2 U! q" k. d( @
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p.s. 求''堂''字正寫