playbr2

Originally posted by sakura310 at  09:58 PM:
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# k# c8 a# R; }9 x- h. O$ T對不起
/ S* S0 o' ^6 U請容許我指出錯誤
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  V1 m5 t8 C8 H在...

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- ^* C* z6 s, E  A/ v* b* t咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:1 g4 V7 X, p/ b
0 d+ ?4 f: x9 b, \7 _, a

' Y: ?/ b4 i( ]: }( |2 \playplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ" o- G. M0 H9 i7 |) d( n
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個答案可以咁.....0 K- e! t5 M& ^; C+ m
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1.ab+bc-ac=0" S3 O. B% y* |4 c. S
a-c=1016 K: y/ p/ a# S3 e( R
b=ac/(a+c)=(101c+c^2)/(101+2c)& b2 f7 |9 N. j  T  J4 X
設c=101n
7 ]) o5 C, e5 {5 _! Q& B101n代入c& G8 e7 L5 z& M

0 E) W$ D& R* T- N[101^2*n+(101n)^2]/(101+202n)
1 {; K' _" y7 f$ d=[(101^2)n(n+1)]/[(101)(2n+1)]
3 S; E/ d2 `  H, U9 N% |=[101n(n+1)]/(2n+1)' [% @# _2 |4 ^, G& b3 [
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因為a、b、c是正整數
8 m9 S2 i9 z; v( h7 K所以n是正整數
6 ~! U7 E; F7 U) k+ b3 ^9 N$ v所以[101n(n+1)]/(2n+1)是整數( A  a1 h0 e$ P
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
0 X9 g' u: |( [8 sn=50$ ?( v4 e. v- T8 X' t% N, o, v0 C
a=5151  <--a-c=101
5 I, \/ s( h  ?- X& f1 Eb=2550  <--[101n(n+1)]/(2n+1); t0 g/ n2 k+ u. W
c=5050  <--c=101n, m! X' R7 M8 I0 T
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
" ~  y* Z4 ?& N4 O$ l$ B( |" ?Filename: DSC01158.JPG
6 Y+ E9 O: J, C3 j! K, _Datetime | Downloaded by | Counts3 u9 }  X) H0 u  }, q
2008-01-18 00:25:24 | 阿感 | 2
5 P' B' c* G# I, _& L2008-01-18 00:24:20 | playbr2 | 2
. x4 P' i$ a5 X) f9 r2008-01-18 00:22:02 | 但丁 | 2" r6 K- M9 `9 j% E+ I7 o1 v6 q

4 l. w: r, x3 L! H點解大家都down兩次? XD

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4 L: o3 }+ y  X% [6 T* F我第一次開睇左2秒就close 左4 H5 j' U9 y. `9 X0 i( q
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
1 ^  {( P  F/ [7 P% t$ IFilename: DSC01158.JPG
0 D2 f$ f; B/ p" yDatetime | Downloaded by | Counts. `7 K# O) `: E4 }
2008-01-18 00:25:24 | 阿感 | 2' U: h4 N) b- S, o
2008-01-18 00:24:20 | playbr2 | 2( y/ o( q+ I9 a8 n
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

5 i( l1 h& Y; D; c
( V* w* ?: e) G3 |- G) D快d捉我錯處( H5 i/ a* S  T# V  e
話吾定我都打錯 + - 符號1 K" U4 P6 a* e, g) t1 Q
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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( q& U$ x( o/ j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:; `0 H9 `7 K7 b) C% A" B
捉錯處就唔敢當6 T, R  m$ G$ [
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
$ i" L7 \- p+ z6 m8 w# S5 `/ l反而適當地調節一下 , 咁會理性好多
, g, X' x  S- {9 E0 R% ]就好似隻game 由12粒珠 加到13粒珠咁
2 ~/ Y! v; m5 Q& O% u當''堂''好玩哂; |! F0 \9 [  _( \1 ]& Z. v4 t- ?2 y) A
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p.s. 求''堂''字正寫