playbr2

Originally posted by sakura310 at  09:58 PM:
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' w6 e% v8 v! D對不起
1 i5 F% a: x' H5 C! D4 b" I+ s請容許我指出錯誤' o5 y9 B: b2 `6 Y6 c; `' A
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在...

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5 o0 X6 u) l# t% J$ J咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:5 {: \" n3 e- Q( c! K

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playplay你串我?:fig...

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乜咁快手ㄚㄚㄚㄚ
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+ u+ E* {) ~" k# p2 b$ v/ ?  x6 }$ Z8 `個答案可以咁.....
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1.ab+bc-ac=0
3 v. x. p: B; h! q& g- i# t( ya-c=1017 Y2 L( ]2 W+ |, t
b=ac/(a+c)=(101c+c^2)/(101+2c)
0 ?. c) @- z7 e設c=101n# c. ]8 F- ~1 n  i( u2 f0 {
101n代入c
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[101^2*n+(101n)^2]/(101+202n)
' }) s3 w- t! o5 g' Z# w" b=[(101^2)n(n+1)]/[(101)(2n+1)]+ b' Z6 y1 `. g' t
=[101n(n+1)]/(2n+1)
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( p! u) X" u9 Z4 G因為a、b、c是正整數, q5 ^- t/ v! W* @! k  n
所以n是正整數
+ Y3 `- F) v0 P: [所以[101n(n+1)]/(2n+1)是整數- B6 g' h( a7 G
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)/ w- c  N3 m& M- e3 f
n=50& R) u. s( @' \- v0 |9 ~
a=5151  <--a-c=101# ~& _' K- c0 e7 a
b=2550  <--[101n(n+1)]/(2n+1)
2 k0 A7 i+ V4 g; R- S: ~c=5050  <--c=101n0 {' S1 H. Z8 w$ `; [/ N' o+ `
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:8 m( w! E  H2 a9 M! O
Filename: DSC01158.JPG7 u) r% |: X5 {" s
Datetime | Downloaded by | Counts) m8 {! V3 q' T- [& T! m6 t& M" c
2008-01-18 00:25:24 | 阿感 | 2- F! m+ l2 o4 q: r/ q
2008-01-18 00:24:20 | playbr2 | 2
  b# I) M) R! M4 T+ v. [2008-01-18 00:22:02 | 但丁 | 29 x3 X' t: R: l
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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
( @( @. D) N8 |7 ]3 u之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:4 s( T( `$ W' Z& q; j
Filename: DSC01158.JPG2 }) b- L4 {" J7 v; ]
Datetime | Downloaded by | Counts
' E9 t% F2 R4 y  i; [( N8 a. F: v2008-01-18 00:25:24 | 阿感 | 2
5 v' X  y( B8 Y2 T$ T# F2008-01-18 00:24:20 | playbr2 | 2
1 B1 v  q) ]/ Z: V9 @2008-01-18 00:22:02 | 但丁 | 2  W* v; b, }8 n

. T3 R: Y2 j' o" p' N點解大家都down兩次? XD

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快d捉我錯處9 G* ~8 n+ u" i0 C! p. H' r
話吾定我都打錯 + - 符號; T. [( u) k: ?8 N/ U' o
係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:* i* p0 h0 w! v4 N# t
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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:3 i( m2 G) p, J9 b: M
捉錯處就唔敢當
( x( ]! I% H& k5 E不過,c=101n哥度(解...

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2 E) y$ W5 b$ |; [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 _$ b! J& Z( `. l; g
反而適當地調節一下 , 咁會理性好多" N# j# {9 n( P* y3 V) r
就好似隻game 由12粒珠 加到13粒珠咁( h0 b0 v7 P9 c" y8 }
當''堂''好玩哂
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! C( U2 b1 z. W7 x$ Dp.s. 求''堂''字正寫