sakura310

Filename: DSC01158.JPG; k. j0 X4 e+ h. j3 [) _7 c; d6 I7 J
Datetime | Downloaded by | Counts
8 z$ N* j( n# e. D  ?1 v7 W2008-01-18 00:25:24 | 阿感 | 2
: C# |1 [+ l/ H' H7 g2008-01-18 00:24:20 | playbr2 | 28 q: R/ v$ T. ]+ b6 j5 E) z- p
2008-01-18 00:22:02 | 但丁 | 2( l; D0 [4 S6 ~1 C0 [+ i' C! z
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
  s7 C7 _" U4 r% d7 JFilename: DSC01158.JPG
7 |, n( f; [' `/ L+ eDatetime | Downloaded by | Counts
  _4 r. x7 C4 f$ W5 l2008-01-18 00:25:24 | 阿感 | 2
: t7 J* {5 `# a8 J2008-01-18 00:24:20 | playbr2 | 27 R) b1 H" Q0 _+ ]! \
2008-01-18 00:22:02 | 但丁 | 2
, T, `+ C6 ]' [( {: l9 X, [4 W0 I8 J. R2 S# R( j) H) A6 Y4 U& V9 J
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
: R; H/ d! \9 r( S7 b, Y之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:) {* ]! S8 O+ m6 q* `
Filename: DSC01158.JPG
, @9 v5 ^  I* x* B4 T4 p8 N0 PDatetime | Downloaded by | Counts$ F) K8 T. I4 [, q& l, Y2 I
2008-01-18 00:25:24 | 阿感 | 2/ L& H$ G9 L- V" _+ n3 }+ t
2008-01-18 00:24:20 | playbr2 | 2
! H$ r; T3 [+ o6 a+ `4 z  k2008-01-18 00:22:02 | 但丁 | 2) D0 \3 p4 l: B* t8 }$ F, \

, p3 j0 D6 [2 M) A! I3 ^點解大家都down兩次? XD

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* B6 _; X/ E+ J2 O( }  ~' y6 V快d捉我錯處$ G- a& K5 y8 I; V' l6 g
話吾定我都打錯 + - 符號
! m7 U0 S9 l3 `* ]6 ~- ^係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
$ e( ~9 {5 H- h3 e4 s, ^' }" I不過,c=101n哥度(解除n係正整數的限制,只是整數); I* z. Q0 h* Y8 k6 y+ c
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~)
- \) _2 w7 t) e( C" M: t知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題9 Y& L8 m  N# V  r9 f
但原先是不知答案,所以唔知有無失根
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6 l" [: m4 [7 z  @+ y+ u有時見到題目都感到有點不爽. `; Z. u, w7 h4 c
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 O- X' c( y# \" W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..... Q3 b; C7 L- \# \& X
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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:' `' X+ E1 B# L. z  `: l  t
冇答案ga....
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+ M2 e/ \8 M1 [2條equation solve 唔到3個unknown ga....

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. R& G7 l! A" O1 Pagree
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5 u$ i, _2 j& J2 equations 2 unknows. o, Y  w& u% L. T
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if 3 unknows there should be 3 equations
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make it simple % e* c+ O/ d1 B# j) k! p

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* G# D9 d3 X  o3 \/ a. ]a + b +c = 3' g. j% M0 l7 h$ |& e
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a+b = 28 C& H' n: v0 E. }

" {- _9 h- S* T3 B0 S8 c" D$ u0 Pthen c is 1 5 n4 ]/ n/ N( u" i

8 n5 L+ Z# C* O- ea = 2 - b
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so 0 = 0 - r( H# U8 U& ^* z
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
; [3 L4 z$ ~6 N3 _* c冇答案ga....
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$ S! I. ~+ a) o0 R1 s2條equation solve 唔到3個unknown ga....

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此言差矣~7 g  `# L4 v% k* j  e
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2條equation solve 唔到3個unknown ga
, F/ Q  o. n" t" F# Q9 W. F& P) j7 p還欠一個條件,就是3條equation都是linear independent(線性無關)的) f& E- i% u! U

, R* f; ^0 @6 i6 `! `$ Q9 C: C* {簡單點說,多元一次方程就是線性方程的一個例子$ |: y! R! x% G& }1 f& C( U9 D6 y" ^
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~)
7 m5 i- Q# E3 v4 Z+ i例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
* ?8 Z2 I7 ~7 l8 g, E$ }3 z3 V有興趣就解解看
3 d: [3 S9 T/ F  o2 }不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:/ W4 ]% x3 v" C6 |" W3 r
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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:
, r) E% Z: m# [/ S* l捉錯處就唔敢當+ M& q# |: {$ ?2 x5 t
不過,c=101n哥度(解...

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8 O. |) z5 Z# T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) Q6 z. Q6 m: o2 i+ @
反而適當地調節一下 , 咁會理性好多
* A6 I# l& t/ ^' I- G" S就好似隻game 由12粒珠 加到13粒珠咁* e7 P& o( l: @- j6 d
當''堂''好玩哂* G% A& f' K+ Y) q( u
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p.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...

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已是正寫吧