sakura310

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Datetime | Downloaded by | Counts, _' Q  o* |. ]( a" Q$ m1 ^
2008-01-18 00:25:24 | 阿感 | 2
' \+ G& |: V* v" y4 V2008-01-18 00:24:20 | playbr2 | 2
  n- U+ Y5 o; R- f( j2008-01-18 00:22:02 | 但丁 | 2" k; e+ Q% a* R$ j7 [. U
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:0 s( z% G$ ?1 s& Y
Filename: DSC01158.JPG
4 R9 f8 o& K* ?8 L& Q# yDatetime | Downloaded by | Counts9 \; r! F, h- I
2008-01-18 00:25:24 | 阿感 | 2$ Z7 _  m: Z- S4 q2 G
2008-01-18 00:24:20 | playbr2 | 2
  |' h, K9 g$ }$ G2008-01-18 00:22:02 | 但丁 | 2
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9 X8 Y9 H) p& q5 f0 A; {4 Q+ Q% o. y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/ Y* \1 ~, n) W0 q) @+ E( m
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
2 ~+ b9 s' z! @6 ?+ [& ~$ r! GFilename: DSC01158.JPG
2 E+ _: l9 e* }# h$ L2 a8 ?7 bDatetime | Downloaded by | Counts& p" H: U- f9 R; K: T3 L( T
2008-01-18 00:25:24 | 阿感 | 2- x2 Y: V# l) h4 o6 v9 Q' L& v
2008-01-18 00:24:20 | playbr2 | 22 S' u3 e! L8 ]* @* M
2008-01-18 00:22:02 | 但丁 | 2. T" b! u0 S4 {9 x
+ c% e( Q, e/ G" U' n9 U
點解大家都down兩次? XD

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快d捉我錯處5 E& Z7 _$ s: h7 T8 N, l
話吾定我都打錯 + - 符號3 F: I( g/ G( f" t) B
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當4 I# z6 A' j' u* a6 y8 H8 W
不過,c=101n哥度(解除n係正整數的限制,只是整數)
% e! e. b' R0 _; B7 O4 K就一下子限制左c一定要係101的倍數(好像看懸疑片,突然劇情說出一些事前沒提及過的線索,不爽~)
$ a+ V- J" v8 u: o# E  c1 W  U知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
: u+ L# q2 E  x2 c+ b1 H但原先是不知答案,所以唔知有無失根( f5 s4 C3 q+ S& s" C
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有時見到題目都感到有點不爽5 X7 i* o0 t& p9 P
題目所求的答案是整數,正整數,有理數,實數等等應該說清楚
( F, I2 n2 a" X7 p4 t6 i# Y有些題目,整數解和正整數解分別好大的說,要找出整數解集有時可不是件易事= =

cutec

冇答案ga....3 V, Q" B' h/ K# m. x# Z( j

- z" {* |  Q9 d( w5 |- o  }2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
* T# P. p/ Y3 R. k, ^$ B冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows0 E) Z' w2 A' j( W8 p6 |) d; x* E1 E

: C4 }% G) J% h0 d9 xif 3 unknows there should be 3 equations
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2 q9 }) _; |! f" Q  }0 M$ Fmake it simple $ ?+ R. L' w6 w/ f" W

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/ g: I# d- G/ x& ]+ F$ j) Ca + b +c = 3  x$ X& N/ t& z) D; U4 Z
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a+b = 26 S- m7 d# J3 d* @! g

! c: q! A# }/ Z+ U0 h3 w" gthen c is 1
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a = 2 - b * g# `3 \- I3 v' }
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so 0 = 0 ) s  w" {$ S" w# S6 T6 z

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:  w: X2 j* h. X/ R
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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此言差矣~
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2條equation solve 唔到3個unknown ga: E3 M* \6 I, g& f! ?; D
還欠一個條件,就是3條equation都是linear independent(線性無關)的2 f$ W0 L# c" k) I' Z: v5 Z
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簡單點說,多元一次方程就是線性方程的一個例子
6 \) `2 U2 p! l8 g$ x在這情況下,當然是想求n個未知數,至少要用n條線性無關的方程* ^1 v! d8 A- L* k7 ?& G3 n
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如果不是線性的話,有機會1條方程解3個未知數的(這不是每次都可以的啦~)
% j) z; }! P9 z8 F例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
2 J, k1 d, H/ x: i6 O有興趣就解解看( ]+ M) c$ c' q& T- `& I4 z: r# @
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ U: z: S' A  _' R; X& L
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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:
. E9 u4 U/ k# A& v) R捉錯處就唔敢當
" }  D% t0 t% M" d, }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$ l- K8 t1 U6 C' h4 C, W( |$ F
反而適當地調節一下 , 咁會理性好多3 ?" A1 x, }8 `( K; s
就好似隻game 由12粒珠 加到13粒珠咁
) q+ m* v. j2 R4 G當''堂''好玩哂* R2 ~) i( }0 [. P7 u- H

+ J/ s* p: A1 _# [, R2 L4 _' jp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:% B' u4 Q0 G; _4 L
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p.s. 求''堂''字正寫...

1 b7 G, z' G% G% k; h) |1 d已是正寫吧