sakura310

Filename: DSC01158.JPG
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4 q0 o3 p: a, M+ }2008-01-18 00:25:24 | 阿感 | 2) f: r6 [' t/ `
2008-01-18 00:24:20 | playbr2 | 27 m3 S3 y. L. ~& Q5 i: N2 E
2008-01-18 00:22:02 | 但丁 | 23 w$ J7 ]( H: m8 g

- k  Q- G& {) |. i0 h點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
9 l3 B, q  B# q/ V0 [  |! k" KFilename: DSC01158.JPG" A  g! e3 E/ v! J8 b! [; r. y$ ]
Datetime | Downloaded by | Counts% {3 @7 J  x  o( j
2008-01-18 00:25:24 | 阿感 | 28 K: A4 A4 w8 P* J
2008-01-18 00:24:20 | playbr2 | 2) c) O2 R, ~1 {4 }9 |- Q
2008-01-18 00:22:02 | 但丁 | 2! s6 v* Q4 K8 [/ D  m  I! s0 c
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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! V$ F" t5 Z/ R# @! B
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
* |% O1 A: D" O5 c$ k) h/ Z1 LFilename: DSC01158.JPG
8 V. S/ u; `8 t, g+ ADatetime | Downloaded by | Counts2 [  H* D. }& ^9 n- `: F' b  h
2008-01-18 00:25:24 | 阿感 | 2/ P5 `) O: q/ s& x: H0 y
2008-01-18 00:24:20 | playbr2 | 2
% D8 {6 C6 K! a( i/ d8 B3 e2008-01-18 00:22:02 | 但丁 | 2
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% O+ s1 @  E+ B4 r點解大家都down兩次? XD

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快d捉我錯處) d, _  E3 }0 y" e! C. r
話吾定我都打錯 + - 符號
3 z, F5 Z( F0 K( U5 k3 b係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當7 u0 Y! ]' M  z) z9 X/ i
不過,c=101n哥度(解除n係正整數的限制,只是整數)3 l2 D% Q; {* p/ {6 B! Z: d4 k/ p
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 h) K- n: y+ \( R5 }
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
5 B5 V8 u( k$ T) v但原先是不知答案,所以唔知有無失根$ c( W9 L  w1 A" f% W6 m- E
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有時見到題目都感到有點不爽
& b  G7 E& _' i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
( O" r3 h" s  l# a3 ^- \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....: c" L7 n2 O- M$ `9 Q/ i
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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:
5 J: O( |# r& {4 T  ?2 e% V# A冇答案ga....# d( D* Z' p4 C& e. ]

! T! I- d. {( ]2條equation solve 唔到3個unknown ga....

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3 Z& x, A# k8 k1 ]agree * Q( G3 B# x. D

3 K* O. |- D( U( Q4 s) c2 equations 2 unknows
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if 3 unknows there should be 3 equations 2 Z: i  w. q* L# n
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make it simple 4 l( k4 k) c7 T7 B& ?
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say
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a + b +c = 3
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a+b = 2
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then c is 1 * N6 c& [3 P% U. J, M
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a = 2 - b 1 L4 J  N8 ^: d
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so 0 = 0 : e. c/ U  F$ ?9 J
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:% m" y; x2 h8 F7 J
冇答案ga....
/ }- d/ c; K' r/ B. j& Y8 @+ H$ b8 Q) {
2條equation solve 唔到3個unknown ga....

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0 D/ C- {! R  H0 e1 f# n- D4 w: `此言差矣~
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2條equation solve 唔到3個unknown ga. k( W( @$ p5 [: m+ I# B/ {
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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7 N1 d% b# S) s1 G# ?, b; C1 b2 v" G簡單點說,多元一次方程就是線性方程的一個例子
7 a9 D! T: l* L% M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
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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~)% O! O: G* g8 t% u, C  B1 {; J+ v
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解! |; D! O0 ?/ b0 j; t- `
有興趣就解解看) B9 j* R& M$ ~4 y
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:" v. |+ b. d1 k* |8 v
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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:, z, w  M' E& `5 d2 _
捉錯處就唔敢當+ @& B' ?7 H: `8 s& C" l, a
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$ c6 `" Y5 `- ~; i
反而適當地調節一下 , 咁會理性好多
& L9 U8 q( x2 _3 ]6 R6 g) N& k就好似隻game 由12粒珠 加到13粒珠咁( [0 J0 Y6 S2 N) ]1 i; T/ \0 M
當''堂''好玩哂# P7 k$ L1 O. P( q; v, V

, V( k  K/ I  Np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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  J5 ?+ h, |/ \0 q8 Ip.s. 求''堂''字正寫...

9 M: S2 Y" x1 T, w9 c- V- c已是正寫吧