playbr2

Originally posted by sakura310 at  09:58 PM:
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' N8 t6 R4 R0 N! }" {2 p$ K對不起
1 Z$ x8 \5 G9 p: F7 d請容許我指出錯誤! A  p& G8 Q" U1 F# [+ d

: @7 c! x& ^& f& @, a+ E在...

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1 N( ]2 P7 w: y0 V7 r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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乜咁快手ㄚㄚㄚㄚ' b' q% u: l- R$ P4 I9 H) C

: f( f7 f7 a5 D  M' K個答案可以咁.....
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( F/ g0 s" o! n7 P+ V- \1.ab+bc-ac=0
% |+ e' x; W5 c: _6 {3 Ba-c=101. w, r. t1 b/ B9 q4 c
b=ac/(a+c)=(101c+c^2)/(101+2c)6 V; J% C8 z3 i( |' S: M* {
設c=101n
7 k  V0 b: x, `5 t% t1 X  y- g. i8 m5 i101n代入c
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[101^2*n+(101n)^2]/(101+202n)
$ l: O& r" W5 ^3 |2 M$ [=[(101^2)n(n+1)]/[(101)(2n+1)]
) o: ?- H0 }( q+ [=[101n(n+1)]/(2n+1)
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" d8 `3 D& |9 _0 r" k3 ]! r因為a、b、c是正整數
* x1 u3 D/ \4 L' a所以n是正整數4 r6 W" D( }, w6 R7 m: P8 a  u& Z
所以[101n(n+1)]/(2n+1)是整數- f1 p3 ^( Z" n
2n+1=101(剩下的2n+1=n或2n+1=n+1，n沒有整數解)' v- R; ^4 [9 |0 j
n=50
4 H0 S1 r+ F0 c2 \- ia=5151  <--a-c=101
* K' K1 T2 ^! W& sb=2550  <--[101n(n+1)]/(2n+1)1 @$ r% i) Q3 d1 \3 f& G: `' p
c=5050  <--c=101n
$ k+ G, u4 `- o( `( ^5 P答案:b=2550

playbr2

Originally posted by sakura310 at  12:27 AM:
1 t5 P& N' j8 \2 {/ CFilename: DSC01158.JPG
# _5 ]* t' c9 H9 F% y- aDatetime | Downloaded by | Counts
# _8 u. f# Z3 v; {0 ]. J2008-01-18 00:25:24 | 阿感 | 2
* z9 U( r* g3 j5 G2008-01-18 00:24:20 | playbr2 | 2
7 {9 R$ U/ _0 a0 L( E2008-01-18 00:22:02 | 但丁 | 2
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) I; C: G2 U- {; b" x" Q3 e# b點解大家都down兩次? XD

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8 B$ Y7 A2 k7 m4 j* h3 d4 Y我第一次開睇左2秒就close 左
0 `$ U7 C, d3 J5 y7 A之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( e% {4 C, D2 N0 v7 |
Filename: DSC01158.JPG
# h* m# T7 n" C; t7 x1 Z( xDatetime | Downloaded by | Counts- L  ?# _( F1 ]% \( ?* F: e/ k
2008-01-18 00:25:24 | 阿感 | 2
3 H- I% B) G% u2008-01-18 00:24:20 | playbr2 | 2
/ w2 y) P5 e8 }; P, }, Y' D& K2008-01-18 00:22:02 | 但丁 | 2: h- B1 g* T1 U

6 B! M$ h4 o1 k. ~% ?) g2 ^點解大家都down兩次? XD

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9 r# ^, G' q- C8 q% i! \9 A快d捉我錯處% ]. U/ {# m- W! o# ^2 j
話吾定我都打錯 + - 符號
8 E" }6 [  ]* l9 n. Q& n" R; F係電腦打答案...的確幾煩...又哂時間...

playbr2

Originally posted by sakura310 at  10:22 AM:5 F6 q' q0 |0 P: B0 W

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9 K7 A1 Y/ u* {# s& T' {1 p7 q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:* ?$ y& u& n" ^% o$ c+ Y3 X
捉錯處就唔敢當6 S% B3 D4 r0 N$ p5 o
不過,c=101n哥度(解...

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% k! i) D7 c  {3 G& p$ Y  ]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2 I/ H3 j" Y4 V
反而適當地調節一下 , 咁會理性好多$ s2 m! G. b; ^8 L- R
就好似隻game 由12粒珠 加到13粒珠咁
2 d# K- @2 W7 _1 d9 E2 ?當''堂''好玩哂' i2 E, A3 Q& h( [

- M- q8 |9 v1 _8 w$ Zp.s. 求''堂''字正寫