playbr2

Originally posted by sakura310 at  09:58 PM:
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對不起
& M6 E$ |2 h" I1 L請容許我指出錯誤
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: g( A- u4 j5 G4 E$ ~在...

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咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:5 b: ~' K" S) W* \+ b

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playplay你串我?:fig...

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' h! G! o* V+ w+ S乜咁快手ㄚㄚㄚㄚ
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& A" |) C- }! S7 [9 ~8 J個答案可以咁.....
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3 u+ n% u" k5 i7 w1.ab+bc-ac=0
" ?! T' _  L9 C8 W) s. e  Ra-c=1016 Q: W1 b  I' I* n9 r8 T
b=ac/(a+c)=(101c+c^2)/(101+2c)
/ z6 c9 a" K/ J- u設c=101n0 A3 S% q# n& U" J& N( r
101n代入c3 h9 K7 X' Z# @3 D% C8 d
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[101^2*n+(101n)^2]/(101+202n)
' C+ N$ G, m! f' G+ z, x2 \) S=[(101^2)n(n+1)]/[(101)(2n+1)]
& B0 N1 s$ X, f8 C=[101n(n+1)]/(2n+1)
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5 u+ Q7 N6 `9 H6 A$ L因為a、b、c是正整數
6 p6 Q0 F" l5 v3 E! R所以n是正整數
2 l' k8 b4 ?8 ]7 [/ v$ Q5 D( x+ R4 a所以[101n(n+1)]/(2n+1)是整數8 N  Q. i" u9 }0 A: `5 r7 r
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)" L/ j5 ~8 `6 j) g# G& c& f, I6 D
n=50/ t0 H- B' q2 O7 j
a=5151  <--a-c=101, l6 H& F. N, p( i
b=2550  <--[101n(n+1)]/(2n+1)  h8 S7 Z( ^& W* ^
c=5050  <--c=101n
; t5 j" i0 g7 a答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:+ f4 W) p0 }; T  h1 x/ Y2 Q
Filename: DSC01158.JPG
- E: f! t' n7 z, {; Z% [Datetime | Downloaded by | Counts
1 e  \  d+ m( A$ J( s0 T2008-01-18 00:25:24 | 阿感 | 2  I) ~: _" p+ r; z3 H3 Q
2008-01-18 00:24:20 | playbr2 | 23 y/ [6 `3 ^6 Z7 G
2008-01-18 00:22:02 | 但丁 | 27 W1 I0 K) Y& i' J: K8 N6 c: e9 j

& p% Z6 G; p* ^! Z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: g' C' y0 p. c
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
) K( t* h" z4 P7 w+ t& s) s$ `Filename: DSC01158.JPG" v+ R: ^: }4 b
Datetime | Downloaded by | Counts1 c, x1 k6 C* G; K
2008-01-18 00:25:24 | 阿感 | 2- ^; R% l2 ?, {5 g
2008-01-18 00:24:20 | playbr2 | 2& m$ _  V$ e0 o
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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快d捉我錯處; u- f# U2 @- i5 w& d; C9 v2 M; F
話吾定我都打錯 + - 符號
% x1 w2 q8 N/ P& A- R; I係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:# l' [% q& @! c7 s6 p

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9 u' e6 M" f8 e. o) D; 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:
, S  G3 Z6 I8 _* |捉錯處就唔敢當* ?/ Z7 U; ~% K) e
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
& E. s8 X. W% R8 b! E" M. Q反而適當地調節一下 , 咁會理性好多/ T, n4 H( `$ \8 t+ j# ?0 S& q
就好似隻game 由12粒珠 加到13粒珠咁3 |/ ?$ W3 M/ k/ s/ W6 U
當''堂''好玩哂1 {& @! r0 @: d

1 P: o: ~  B8 T0 G, ?5 x; [# }p.s. 求''堂''字正寫