playbr2

Originally posted by sakura310 at  09:58 PM:( @. I4 c" Q" x% @
/ z5 i1 v" l7 @8 K) ?4 f
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對不起! h9 l! \5 i" q" v0 Q( x0 \  K
請容許我指出錯誤
+ J, y% F% Y( Y; B5 c
4 b6 n4 y2 h# ]$ E) m在...

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: T: m: Z! U4 N+ G! u% D& |咁你又吾去計

playbr2

Originally posted by sakura310 at  12:08 AM:
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playplay你串我?:fig...

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# h8 ^" z- Y( U乜咁快手ㄚㄚㄚㄚ9 y& E$ i9 ~4 i* Z0 n

% N! B, v! `4 l: h9 Y/ L% ]個答案可以咁.....3 h2 V( Q, G2 x/ D

; B, H4 E( F* z1.ab+bc-ac=0  X; Y! Y6 w) w5 ^4 D3 S- K4 |  P. _
a-c=101# O# j: Z  @, I- I4 m$ I% V
b=ac/(a+c)=(101c+c^2)/(101+2c)* N  Q) w  v& z
設c=101n5 k" |* e# D) R: x! c# n
101n代入c' j8 Q) e3 Y0 M0 O1 e8 _4 i3 o# v
2 u& T0 a5 A4 Z2 B0 K2 \) D
[101^2*n+(101n)^2]/(101+202n)
2 g5 N) [( O/ |" X/ x4 n  V; N7 ]0 {=[(101^2)n(n+1)]/[(101)(2n+1)]7 j8 U8 i7 Y' A! k" ~4 {9 }
=[101n(n+1)]/(2n+1)
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因為a、b、c是正整數
( j' `. G/ b( c. h# L; V所以n是正整數
" k/ r% i! d& Z6 w2 \% x所以[101n(n+1)]/(2n+1)是整數
4 K4 m1 t6 f- H/ `: R2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)1 w0 F# r6 M: z4 m' c
n=50
- |! c5 Q* f& Sa=5151  <--a-c=1016 z( k6 t& ]5 f4 _" R6 B1 v( U5 U
b=2550  <--[101n(n+1)]/(2n+1)
+ p+ T: A4 n/ j5 u& [3 P. R# D+ V4 gc=5050  <--c=101n3 |- |/ f9 q; @/ t/ M8 |5 ]# z
答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:! W1 k1 x7 r' Z' O! a9 c# w
Filename: DSC01158.JPG" ~$ l( e2 z4 a8 [; w8 }
Datetime | Downloaded by | Counts! ]7 ~4 h: L3 o! j1 n
2008-01-18 00:25:24 | 阿感 | 22 a0 W0 n0 @. M8 i7 o
2008-01-18 00:24:20 | playbr2 | 2
/ u: o% t2 f! I% T7 y' D' z1 J2008-01-18 00:22:02 | 但丁 | 2* r; t* q: j* Q3 B* q0 B

7 Q! i. d( |) \( V. t) E/ h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+ e8 e- G' e) w9 d$ E5 v4 [. S8 T
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
2 ^  b, }+ _0 yFilename: DSC01158.JPG: z( m% r3 m$ e! V" B
Datetime | Downloaded by | Counts1 N' Y, S; [( `, K  {/ q; R3 n
2008-01-18 00:25:24 | 阿感 | 2
  x5 x7 J( @+ E$ I2008-01-18 00:24:20 | playbr2 | 2
4 N0 f! b8 O& T4 ~8 N4 m2008-01-18 00:22:02 | 但丁 | 2
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! k& W7 |% k! v5 u點解大家都down兩次? XD

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8 Y2 d( e* f) I( F# I" ~3 Z& T* S快d捉我錯處, n2 B" K  q2 a# F3 o# x0 ^
話吾定我都打錯 + - 符號
. M$ q' u9 m  X; \+ T1 X) F* T* L係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:* S* }4 O$ p; n; w* h' b% b

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' w/ h! j8 Y" G4 ]& f9 X+ E% W) P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:
) g# d8 f% N% g' k5 s' U6 e捉錯處就唔敢當
) i2 ]6 U" p, `! i8 |9 V$ [1 |2 T不過,c=101n哥度(解...

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2 u" r- m" F. `0 ^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
: C' a2 r) `$ s# R/ m6 F反而適當地調節一下 , 咁會理性好多
  h' I" b- H% }# R4 z就好似隻game 由12粒珠 加到13粒珠咁! h6 s9 ]4 H' m# v% J2 h: b
當''堂''好玩哂7 M  D- v' a& o5 {# ]& R2 a
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p.s. 求''堂''字正寫