sakura310

Filename: DSC01158.JPG' s; Q  k' O( Z8 h
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2008-01-18 00:25:24 | 阿感 | 2
* {  X, k  m1 a' m# W+ l: w% y. r9 L2008-01-18 00:24:20 | playbr2 | 2
/ w! M# K0 L8 h$ g1 r2008-01-18 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:
, V' X3 q" B6 [* I5 ^9 o4 w# UFilename: DSC01158.JPG
, R: X: I. X* T3 A8 j  l6 d$ dDatetime | Downloaded by | Counts+ b; I' v7 O) @5 f% h8 }3 t
2008-01-18 00:25:24 | 阿感 | 2
) H9 H/ z* q* u7 |2008-01-18 00:24:20 | playbr2 | 2
; \1 `7 `3 k  J  A8 s0 M: c( B2008-01-18 00:22:02 | 但丁 | 2  \7 j0 d" x  u
6 W1 ^: ^. o" f+ K; x+ I
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
) B/ R6 Q, r7 I: \/ q( Q  F之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
$ j$ g" x  o7 {  FFilename: DSC01158.JPG
' R( \3 i5 E, m  TDatetime | Downloaded by | Counts
% N7 q0 S# E' f: @; Y- B& Z( ?2008-01-18 00:25:24 | 阿感 | 2
$ M8 n# i& D# a9 G# r0 a( `2008-01-18 00:24:20 | playbr2 | 2
4 M3 n, u- `7 T0 P$ g  O2008-01-18 00:22:02 | 但丁 | 2- ]% M1 q: \3 f, y

, z8 t. C  w5 D. F( B9 R# m( |6 @點解大家都down兩次? XD

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快d捉我錯處6 \# i4 \5 m. i' e6 ~' V) D
話吾定我都打錯 + - 符號
; c) g4 r) C. @, n1 _! v係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當& s. A4 J2 v1 F/ k* C
不過,c=101n哥度(解除n係正整數的限制,只是整數)$ m7 t* v7 ~* z
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~)
& m0 y" s+ c. M1 u; j' K  i知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題( C+ o% k& \/ y# }# Z
但原先是不知答案,所以唔知有無失根* L7 [% c3 G3 P
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有時見到題目都感到有點不爽
( M3 `2 {7 _5 R/ L; o) }, z. t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
5 N: A& M9 f; K1 ?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:
* P- J+ ?9 {" ~, `- {5 i" g0 ?冇答案ga....# ?+ J, }/ l2 k
1 w3 l7 ^# r. w1 v
2條equation solve 唔到3個unknown ga....

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agree & y" r$ v+ \/ m- n' F5 x
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2 equations 2 unknows/ r) i7 |. v/ G1 d7 @

9 I. g) P) V3 lif 3 unknows there should be 3 equations
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make it simple 2 t$ y* p7 |- i* s: z8 m- C8 g

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a + b +c = 37 ?4 A% d# P, V7 W  Y0 y
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a+b = 2, f* t- y2 j! Y6 q

* b# u0 K2 [5 j) Ethen c is 1
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2 l/ {9 I; U& u: L) Pa = 2 - b
1 c3 X) s+ j1 q0 j  ]& G: T, R0 G, t
so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
  C- E, ]1 B% `. w( H6 a3 y冇答案ga....; U/ y" x9 y  C9 [# x* ]
3 @" y" s) t* t+ v* x, M
2條equation solve 唔到3個unknown ga....

4 a+ ?) A+ c/ @# d- O0 c% v3 A

# J- p9 q5 V5 W0 y, T3 ]- x6 N此言差矣~
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' I3 r% _" m2 Z% {9 v; B% z7 w2條equation solve 唔到3個unknown ga& a" L9 ]  y7 m4 i; s. @4 L
還欠一個條件,就是3條equation都是linear independent(線性無關)的4 t1 V5 @* S! L+ }
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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; ], l2 \3 k1 y6 g
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~)
5 j$ N' A$ t# k. `8 W# u6 N# Q例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- W* x4 F7 D1 ^5 t8 ?有興趣就解解看
: S% p( l7 i( K% D不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
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' t* i$ _% z2 l" y" 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:
, m5 t; [- ~& P6 H, t捉錯處就唔敢當  l) w8 O0 ~: ?$ v1 ^9 [
不過,c=101n哥度(解...

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/ W# S! K2 w* M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4 U' _# _, f+ Q- b5 x
反而適當地調節一下 , 咁會理性好多
5 t0 C+ [4 O- s就好似隻game 由12粒珠 加到13粒珠咁
% o* t4 u" {0 F' b' A當''堂''好玩哂
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:8 h/ f( i' U1 k& U+ N9 {
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p.s. 求''堂''字正寫...

) k! ]0 O/ ~8 a5 {% k. r6 [# L$ X  _已是正寫吧