playbr2

Originally posted by sakura310 at  09:58 PM:
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對不起
( \$ K0 e. c, v( @6 R* B請容許我指出錯誤
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0 P$ S5 S7 A+ G) [2 s' r3 T9 m: R5 K在...

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咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:. S7 {5 C" ^* c

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playplay你串我?:fig...

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" f  d; o9 N7 F% p# Y1 X- o; j乜咁快手ㄚㄚㄚㄚ
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個答案可以咁.....
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1.ab+bc-ac=00 M- {' ]) D9 C. `: z) c
a-c=101
5 F$ d. C9 I0 L1 }b=ac/(a+c)=(101c+c^2)/(101+2c)
" O& H0 O. C) F1 s設c=101n0 y/ O/ B5 [, |; H
101n代入c
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, J9 \2 o0 E9 |[101^2*n+(101n)^2]/(101+202n)1 O; a. Q! j* k( m( K
=[(101^2)n(n+1)]/[(101)(2n+1)]
3 _, A: W9 U9 u# o=[101n(n+1)]/(2n+1)
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因為a、b、c是正整數
/ h; ]0 B9 h0 l  w! p所以n是正整數, m0 F4 c* y1 V% t( a( n+ M8 a
所以[101n(n+1)]/(2n+1)是整數, q  y3 ?) M% D5 T& M& d  C3 C2 }; o
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)
7 p" R& `3 a# h9 An=50
+ [& b. B; o% z& X" Ya=5151  <--a-c=101, b3 V' y; Q, m- R
b=2550  <--[101n(n+1)]/(2n+1)
9 l; H) y0 N$ H4 C% j+ xc=5050  <--c=101n
- Y: A0 O) B+ I0 O$ }, t3 n答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
3 l7 C$ b- G! T$ SFilename: DSC01158.JPG
/ k# @6 z5 \. Y" h9 {& xDatetime | Downloaded by | Counts
( a: z% k0 T2 G" h2008-01-18 00:25:24 | 阿感 | 2
4 k- b# \" L4 S% ?. i6 n2008-01-18 00:24:20 | playbr2 | 2
6 Q& Q8 T) G+ i: X( u2 D- \2008-01-18 00:22:02 | 但丁 | 21 l7 O* Q# F! Q% n
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點解大家都down兩次? XD

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) a+ [6 w$ k4 D/ U- u我第一次開睇左2秒就close 左3 L$ ^3 S3 [9 b+ O
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
# o- {& a: Z, Q, h9 f$ b4 zFilename: DSC01158.JPG
. u6 m, a: [- {Datetime | Downloaded by | Counts" z+ D3 N; M: o; Z( A2 @
2008-01-18 00:25:24 | 阿感 | 22 e, s1 q1 I+ Q9 \1 a8 b# f' U
2008-01-18 00:24:20 | playbr2 | 2
  W% @( S- T) i- l1 V) w7 G: c2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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1 ~% b  @6 ?: c0 g1 s+ _* p/ F8 }快d捉我錯處7 R2 s# L) e/ U9 g3 W/ M
話吾定我都打錯 + - 符號  {0 P2 h1 {, b7 B. Z
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:2 S3 W; j% m( p! X, f
捉錯處就唔敢當& L$ z  U1 r. `& K
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9 Z" ]: d4 Y  C8 K, j, O& ~) g5 |
反而適當地調節一下 , 咁會理性好多
5 r, b1 v7 ?- R" W+ [  \8 ~' O就好似隻game 由12粒珠 加到13粒珠咁
3 ?1 Q, t8 h2 e當''堂''好玩哂
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6 r4 E* H. W2 ^  T' Zp.s. 求''堂''字正寫