sakura310

Filename: DSC01158.JPG8 J) B" r) O8 J$ x" y
Datetime | Downloaded by | Counts7 |: a$ _. G/ z
2008-01-18 00:25:24 | 阿感 | 20 |( p6 r3 E) p* ~, Y' i- u
2008-01-18 00:24:20 | playbr2 | 2# B& p  I5 L  ?& @* X. _% H
2008-01-18 00:22:02 | 但丁 | 2
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  V5 S/ T2 N+ g; _點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:, ?! w3 F" G, |  n3 e8 k! f
Filename: DSC01158.JPG
- C# {' k' e. `( h$ VDatetime | Downloaded by | Counts
" C# m( \0 d3 E2008-01-18 00:25:24 | 阿感 | 2: R2 _& h: h3 F4 t9 f
2008-01-18 00:24:20 | playbr2 | 2
; p2 H# b$ F) Z9 C& h! ?2008-01-18 00:22:02 | 但丁 | 2
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  m$ G& J: N+ p+ Y9 C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
# d: t  E  O1 x) D/ V: h$ h之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
& _# Q3 `  S8 P+ e, R3 UFilename: DSC01158.JPG
3 G0 |: U0 B9 F* x9 R/ x+ F# v/ n3 ~! nDatetime | Downloaded by | Counts
3 B( g1 T4 `9 l" Z- x8 V2008-01-18 00:25:24 | 阿感 | 27 ~: z7 U- l  C- @$ t
2008-01-18 00:24:20 | playbr2 | 2
  M! x4 l4 P- k8 Z# V2008-01-18 00:22:02 | 但丁 | 2" ?4 r5 m  Q% Z; @) _
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點解大家都down兩次? XD

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快d捉我錯處
# L1 \2 R4 E0 V  t1 [$ ]0 S話吾定我都打錯 + - 符號5 E- c6 B1 @0 I7 _: h9 E# A/ p$ g
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當; \1 ?! t$ l* T' [# q* N) T
不過,c=101n哥度(解除n係正整數的限制,只是整數)0 Z* t' A, R+ O' D" b' D' 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~)/ U+ j5 p; \' s" w- K, T
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
" L) P9 S5 U/ K6 U: |2 f但原先是不知答案,所以唔知有無失根; y/ A' ^9 Q6 p

# q3 C! g7 Z9 b/ _7 i  }9 c2 z有時見到題目都感到有點不爽
) r0 b! h. H8 s, Y! h  p, }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$ \9 A6 ?! |6 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....
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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:
. I+ A- v$ t  ^冇答案ga....5 z* T2 y# C  S- i# H
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2條equation solve 唔到3個unknown ga....

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agree
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2 equations 2 unknows
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if 3 unknows there should be 3 equations 5 [' I' f( _/ u" B0 o- ^1 I1 E6 x" a# y
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make it simple ! j: `: I* }) N8 ~/ e
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say . Z5 r* O& G2 @! E* c- @

6 a5 f) p5 B" U$ ~a + b +c = 3
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* ]% K2 n* O) O1 i. h7 v( pa+b = 2
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. D- [1 S9 G; ~' l( J8 X$ F9 Rthen c is 1 * A; k6 U' b6 q! ?) n9 w+ @
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a = 2 - b ( f- O: d# d! g) V! m/ P" g' N7 u1 j
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so 0 = 0 6 h' ^1 [6 W! O; [8 y5 ]
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
( c1 e0 y$ y# M1 [' w冇答案ga....
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2條equation solve 唔到3個unknown ga....

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* g/ e3 f5 b4 Q此言差矣~
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2條equation solve 唔到3個unknown ga
9 _3 Z! B  d' [( l2 M9 u還欠一個條件,就是3條equation都是linear independent(線性無關)的2 ?$ |( y/ Z# _* V

+ i. G- B6 P1 }0 q$ c4 u, k! `) S簡單點說,多元一次方程就是線性方程的一個例子" \7 C5 H: x+ j, g% K& h
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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/ i' D4 o: n% A' V6 B) W1 [5 l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~)
6 k# i. z, x# t! M例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- t! l2 k) F% ^7 k" L% j" L有興趣就解解看
9 ?- d) q/ k2 J( W( F不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:$ ~. f( Q- c% h- u& ]2 E/ h

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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:# S# C  N5 p! a5 F
捉錯處就唔敢當9 w$ s- K5 s4 H5 x8 x, F
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$ p& ]& b: h( U. _; G
反而適當地調節一下 , 咁會理性好多
2 ?( S! N; }0 ^% J$ g7 o就好似隻game 由12粒珠 加到13粒珠咁
9 K2 N. m8 f. ?" H; Y% K  ]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:+ u9 P8 X& F+ [8 C* o

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p.s. 求''堂''字正寫...

# f1 C7 V& v* D- q9 P0 S. X已是正寫吧