sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
, R4 q3 i9 N3 k# F7 j2 @2008-01-18 00:24:20 | playbr2 | 2
6 _. L/ L( N" X5 a$ b2 i2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:# R- [  F5 O; J7 g# K, _; L
Filename: DSC01158.JPG  F7 V" a4 m) n1 r# l0 ~* c
Datetime | Downloaded by | Counts
7 l& U2 [: b: t: ?8 n2008-01-18 00:25:24 | 阿感 | 2
6 M6 V, l: [. p8 d& Y4 I$ R2008-01-18 00:24:20 | playbr2 | 2! e- z5 {) [5 T$ [% A
2008-01-18 00:22:02 | 但丁 | 2
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& `: V( D% X% a: m點解大家都down兩次? XD

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4 i* ]# u' @0 G3 v: {* E0 Y我第一次開睇左2秒就close 左
/ T$ B) B% u: [  z. T  _- h! R) ?之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:3 e" f5 r. T9 s, Q
Filename: DSC01158.JPG
# G3 ^  E$ Q# @- A$ t# E, wDatetime | Downloaded by | Counts
+ g! p) J0 E6 {9 p# `2008-01-18 00:25:24 | 阿感 | 2
2 g) g* R9 F1 i$ D! k2008-01-18 00:24:20 | playbr2 | 2
3 T+ q/ c. W6 P! h$ P) P% e# ]2008-01-18 00:22:02 | 但丁 | 2
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" T* p( b/ i6 d% m2 d點解大家都down兩次? XD

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快d捉我錯處/ L2 g: W6 z4 ?! J
話吾定我都打錯 + - 符號* J. l; T, ^7 X/ L0 G: H' E
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
- p  d6 O3 ]8 u3 R不過,c=101n哥度(解除n係正整數的限制,只是整數)
/ \, J" f7 D+ {9 o8 J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~)
7 t$ y4 S/ t; w( {知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題, _- _+ L2 ?: t) P( i
但原先是不知答案,所以唔知有無失根
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$ Z$ t6 F! d; ~# M; @7 Z有時見到題目都感到有點不爽! }( J. E$ l+ ?, w, I. V% t% A
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6 Q: ^3 J" Y( k: m$ ^( G: S
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....
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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
1 d3 [/ Y5 Y2 @) t& Z冇答案ga...., F, l0 Q* \/ m, j* J2 [3 i8 J

4 A/ {- `% H' y0 V' ~2條equation solve 唔到3個unknown ga....

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8 u$ m7 }; x3 j% a- p6 w  {agree 5 e$ b( \" V, ]! O$ I, W

9 v3 d( ~% u+ s8 u& n# h2 equations 2 unknows
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9 b( E. W, V. [3 D, \6 P: l% n, zif 3 unknows there should be 3 equations % ?9 q) K7 r5 G+ h* j

/ J* U, }, }  m: C+ ?3 Bmake it simple
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: t2 {4 Y$ c, N8 {$ Y9 z* h0 f7 bsay . U3 A- x4 m$ C  x* N  j2 |
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a + b +c = 3
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a+b = 2
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8 ^! G0 m- K) J5 S- P( V, ^! Zthen c is 1 % K: I+ M3 P% O5 K3 ^
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a = 2 - b ' W  i1 N4 ~  K  x$ E. p: G3 _
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so 0 = 0 $ \/ X4 |* Z" m/ p

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:( @2 C9 Y5 @, [5 p
冇答案ga....
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9 ?. u* \3 d* Z3 f2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
# c! ~1 u1 Z9 |5 w還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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
! z; p  q7 T& R, u& P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# z. {  _7 F# L; b( b" z

% u& \* @2 R4 j' {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~)
& Z- }6 l- c6 D" Y' E/ [例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解- n' J3 i! {* h# f, k8 n
有興趣就解解看: t4 _2 N5 E+ x& E. ?
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:# T+ m9 L, `- Q/ |
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% C! Z- [- Z& `* `" n+ O( e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:, D9 n9 ]9 t+ X; D% v  L
捉錯處就唔敢當
/ `; Y; m9 M7 [9 P4 L  i$ A不過,c=101n哥度(解...

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( C5 t  ~# w* T# g7 ^8 k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
; M0 N3 H" {4 Y% f: ~反而適當地調節一下 , 咁會理性好多7 j. W4 v. Y) U# ~
就好似隻game 由12粒珠 加到13粒珠咁! {/ p# o0 Q9 G$ H
當''堂''好玩哂
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' U$ W  P% m3 j1 x9 ~% O9 wp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

$ d5 P9 x# B0 K2 L已是正寫吧