sakura310

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* `' j# s! x1 M/ C2008-01-18 00:25:24 | 阿感 | 2
8 F+ J) n' ]& D, _* t! D- l* z! j2008-01-18 00:24:20 | playbr2 | 29 W/ r/ C: |) ?+ c% W2 p3 K8 k; @7 Y
2008-01-18 00:22:02 | 但丁 | 2
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) M" ^' N& Y! E7 E) X( A, d' X4 J' G點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
' [/ S3 R, m; q6 i9 m: Z2 X1 {Filename: DSC01158.JPG" k) r8 u2 e% \: I4 q! G
Datetime | Downloaded by | Counts4 o5 S6 K& F5 X( R
2008-01-18 00:25:24 | 阿感 | 2* P: g3 R) c) N. R2 `. h; ^
2008-01-18 00:24:20 | playbr2 | 21 ~) R: V9 v, n2 d
2008-01-18 00:22:02 | 但丁 | 2; s8 ]5 `9 D5 a9 O% Q$ Z
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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6 i! i! P% C( t/ y; V
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:- c7 l, u% O' o% G/ n1 I5 C# O+ ?
Filename: DSC01158.JPG
* d7 e* F( W3 |1 K6 {Datetime | Downloaded by | Counts* m$ _# v9 r! B. D# g7 L/ q& ~8 b
2008-01-18 00:25:24 | 阿感 | 24 p1 B( U: b* j/ {" ^
2008-01-18 00:24:20 | playbr2 | 2
6 c' B; \5 n6 a( C/ r9 U2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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快d捉我錯處9 r3 e% k% V5 Z) k
話吾定我都打錯 + - 符號  k/ u3 e# n/ e2 }! a2 {
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當( L, f: V0 [& @0 [/ C
不過,c=101n哥度(解除n係正整數的限制,只是整數)
, B; N% F) E& x- v! W* t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~)
) L2 E: P8 e( M' I9 Y  z知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題% l8 V/ v# }# [" H: q
但原先是不知答案,所以唔知有無失根
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+ o+ k- t" D) |$ }5 h: |4 z5 p有時見到題目都感到有點不爽. b- J2 i* q; g# H  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
- }% W" ~  Q& `* I) D" L& ?+ \- P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 G7 d# G$ l( g0 I8 Y
冇答案ga....
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+ p' Z* l  g+ @6 H2條equation solve 唔到3個unknown ga....

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- S' _; v4 }. Q! E6 r, pagree
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2 equations 2 unknows
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. `3 G/ D2 w' Y- G6 xif 3 unknows there should be 3 equations
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make it simple , f! i# R8 ^) j" F9 E

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! }! ?% }; w2 [. F9 |a + b +c = 36 _6 p5 u- |! w. f/ E

% d' s; M  u6 V7 q# N# ea+b = 2
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then c is 1   ~9 p& q5 T' F3 g/ `5 I
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a = 2 - b + m. _* L1 p) a  k: h9 u
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 f3 `- x8 M* W8 M$ x
冇答案ga....# U/ o! z' ~; B' o
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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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- g1 H  p% o: N- @9 a2條equation solve 唔到3個unknown ga* Q5 m1 @. Y9 J7 L1 H) p; ^- p
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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* ?9 m  Y# C7 F8 q簡單點說,多元一次方程就是線性方程的一個例子
  a% I, z* J  Z. c( L" w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 [7 O9 \: J9 \1 w; A

* ^+ J% q6 k3 N/ ~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~)
4 {9 v, r  h& p! b3 c' [4 X0 L例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
: I1 p7 ^0 ?# U( i有興趣就解解看
, S- W1 ~5 ~' ]% O* H6 T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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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:- o$ k$ _& l6 C# V, d$ a
捉錯處就唔敢當+ X/ Z; C1 L2 t6 y) }% ]$ u7 `1 M$ }
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
: I  x( f4 E6 A5 {+ u2 @- b反而適當地調節一下 , 咁會理性好多0 a5 m1 D. [' @+ j" `! k; v- z) W
就好似隻game 由12粒珠 加到13粒珠咁
. Y/ ^' ]% R: z+ b/ N# d當''堂''好玩哂3 ?/ ~& d! b. n( v' O& u- B( P" ]
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:: O$ h! I, m6 C1 X

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  v# U  j9 S; D: ~! ~1 Y9 e* ?p.s. 求''堂''字正寫...

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已是正寫吧