playbr2

Originally posted by sakura310 at  09:58 PM:
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對不起$ S+ D5 E% j/ k0 a$ ]
請容許我指出錯誤9 w- x. q+ n' E! n8 i7 d  ^' S& w% C
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在...

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1 C/ l1 s) P: {7 M咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:/ {& T0 T1 O$ T  L
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playplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ
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, m: T/ e0 F- M+ w個答案可以咁.....( Z3 h* Z0 P& L) J) l6 I5 [: e
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1.ab+bc-ac=0
1 _& ]7 L, N9 Y* w; _4 i' oa-c=101. c: [& k0 |4 }
b=ac/(a+c)=(101c+c^2)/(101+2c)  O+ q$ N' X- M8 f1 M
設c=101n! l- U) t) S! y* c  Y1 v) l2 [+ V
101n代入c
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[101^2*n+(101n)^2]/(101+202n)
& D; K# M' p) D/ b0 x/ z3 S=[(101^2)n(n+1)]/[(101)(2n+1)]8 l. @" p, P) ?, S9 ?; W3 H- ^, j
=[101n(n+1)]/(2n+1)
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" n/ O* y8 N+ R/ U* |6 W& b/ ]因為a、b、c是正整數# {1 l/ G2 g9 Y8 @) C. |$ j
所以n是正整數  G6 H, }, d  {$ q6 u; c& v1 x
所以[101n(n+1)]/(2n+1)是整數
) z5 i$ T+ _* i  n4 b5 h0 w; p/ i) P2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
  [7 O# \6 ~5 L) F9 m# |4 Nn=50
  j9 l" l/ y! M2 ?: Da=5151  <--a-c=101: \  y' T! h( I' ]7 s3 L  w
b=2550  <--[101n(n+1)]/(2n+1)
- g8 R9 b, F9 f: n( B, `8 E' xc=5050  <--c=101n
) e8 m- G3 f$ d) W7 w; C* D/ |答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
9 y( w! ~3 Y0 K# H$ s* {( q- @Filename: DSC01158.JPG0 H- V, U; X3 H, c0 `
Datetime | Downloaded by | Counts
3 f5 v/ I) y4 S2008-01-18 00:25:24 | 阿感 | 2
7 D3 R! F5 ~+ d) U7 G' A2008-01-18 00:24:20 | playbr2 | 29 V; Z  Z; n2 p) `! k2 O0 S
2008-01-18 00:22:02 | 但丁 | 2
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- @" ?% o7 l- u" j% d% y' Y, Q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
% f, Q& I& K' N6 E' M5 I  o' e0 e之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:9 j4 e0 ^$ U# V! a  y! i+ _
Filename: DSC01158.JPG
/ |- J3 Z1 ?6 \- ]  z, y- KDatetime | Downloaded by | Counts
) M; v4 \8 y) ^! A" A' Z6 F2008-01-18 00:25:24 | 阿感 | 25 w. r# E2 b8 l1 K) I
2008-01-18 00:24:20 | playbr2 | 2# ]# v! N4 I7 t& ~3 L4 P4 R1 {
2008-01-18 00:22:02 | 但丁 | 2
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. F' H0 D& q$ _( x4 x, @/ j" g點解大家都down兩次? XD

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快d捉我錯處( ^, u# `/ G8 M3 m' S, J
話吾定我都打錯 + - 符號
7 P# c) R: m& X8 m  D# w% U; n; f- o係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:! n$ h/ c3 l% G

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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:
  U  o# d& y; N1 i' u7 c捉錯處就唔敢當0 A: z% o) t) q: g0 j* D, J; A+ ~8 r6 @7 w
不過,c=101n哥度(解...

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- l% y$ w7 x% g, 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
$ Q- t( L$ A! l: j: w1 }反而適當地調節一下 , 咁會理性好多, L( Y! D. u) B: a
就好似隻game 由12粒珠 加到13粒珠咁0 N( E% {+ y# O7 @0 e1 d: r
當''堂''好玩哂
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. x8 T* j+ v+ `& d: f  F( u8 {- O. Kp.s. 求''堂''字正寫