playbr2

Originally posted by sakura310 at  09:58 PM:- z# z7 ]/ n6 w

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2 r1 Y& n& H. j8 o對不起: z- Y' z' o; Z& w1 R+ S/ D* _
請容許我指出錯誤0 `5 T$ P& v" g+ Y. N$ j& j

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5 ?; h/ z/ |3 }1 H2 z5 u, d8 o咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:6 s" I; m- h, J

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playplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ
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個答案可以咁...../ I4 f) K- K5 z" `2 b

; ]& y3 [/ c3 o6 k9 I1.ab+bc-ac=0) ^1 n. O9 p! `
a-c=101# }: ^9 s/ f0 h9 c9 S1 l
b=ac/(a+c)=(101c+c^2)/(101+2c)
9 R0 d; ?/ a7 G4 w2 Y設c=101n. m+ o  p' i) V0 t0 M  m1 F' t( {2 s
101n代入c
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[101^2*n+(101n)^2]/(101+202n)
* H0 `: _* p- x5 k5 c  K- j=[(101^2)n(n+1)]/[(101)(2n+1)]
4 R8 D& P  i1 c! V& v=[101n(n+1)]/(2n+1). K1 N1 d/ a" a; x

4 s2 J! c2 A; v+ R5 b6 K9 g9 q9 f8 e因為a、b、c是正整數
; ]* s4 t* b- u所以n是正整數
3 [+ @5 |2 [. U' F5 a0 J# h; i% x! k所以[101n(n+1)]/(2n+1)是整數
4 D  v4 w: i& u2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解), ^5 r! k$ g+ q6 @4 U0 r- e
n=50
& \2 y" z- ~0 za=5151  <--a-c=1012 p" r4 \9 Y  Q% Z: d# O
b=2550  <--[101n(n+1)]/(2n+1)
/ @/ X" W! \, L3 k# pc=5050  <--c=101n
+ J6 d5 w" O( B5 a; ~& `% c答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
+ c+ g/ V2 Q2 v) K: RFilename: DSC01158.JPG
" |" V" r0 e5 B1 s/ V; lDatetime | Downloaded by | Counts
( w7 e* k0 s( }; N2008-01-18 00:25:24 | 阿感 | 29 ~) Y9 C9 F' J7 X  r+ j; E1 }) Y
2008-01-18 00:24:20 | playbr2 | 2
; ~$ r) P' E4 M7 g+ O  s( z4 p2008-01-18 00:22:02 | 但丁 | 23 W# ^( O& J3 R8 D& _6 f

$ f/ l8 n/ W! c4 {9 t* G) @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
0 d1 v( g# T6 K6 O( m' u" n之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:! z% Q. Q& P1 W) C; A
Filename: DSC01158.JPG# V% i3 Q3 ^3 V" _
Datetime | Downloaded by | Counts7 j1 m8 V- x, P; u
2008-01-18 00:25:24 | 阿感 | 2
& W" M6 M- a# d# A8 i4 B2008-01-18 00:24:20 | playbr2 | 2
0 f6 v/ l/ c4 D' @4 \3 T' Z& u2008-01-18 00:22:02 | 但丁 | 2
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) }* o" w! Y; @( w$ Q# L點解大家都down兩次? XD

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快d捉我錯處
2 g, s/ _3 P& V; i% w話吾定我都打錯 + - 符號" [6 i9 H9 B( W+ _- j, k; k
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:4 r( D1 B2 \) B( l
捉錯處就唔敢當5 g! U) M+ x6 t
不過,c=101n哥度(解...

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- y/ \0 g2 Z# t' @- Q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7 F5 a: C" E4 {! X& C8 M; V8 p9 A3 m
反而適當地調節一下 , 咁會理性好多
: H- V# E" D3 B就好似隻game 由12粒珠 加到13粒珠咁
% m; E' x- v3 A# f當''堂''好玩哂+ v  u: e$ d* m5 l' ^( x* I

1 {. _) M3 G2 B" Gp.s. 求''堂''字正寫