sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
" C2 h5 M5 k1 Y* w- _& _2008-01-18 00:24:20 | playbr2 | 2& [2 \- D  \* _3 m8 o, Y
2008-01-18 00:22:02 | 但丁 | 2
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7 t# O2 O/ b3 u. S8 j點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:8 p( r) T* w: L" c% B6 J0 ]! K2 r
Filename: DSC01158.JPG6 Q- R& H( B+ _; e' {
Datetime | Downloaded by | Counts
* H4 E/ @& [5 C: Y  w; C2008-01-18 00:25:24 | 阿感 | 2
7 n" J& V5 T4 J' V7 k2008-01-18 00:24:20 | playbr2 | 2
5 M, g& C0 V; R2008-01-18 00:22:02 | 但丁 | 2& Y9 @* E9 n  s6 n/ B: p/ a. ?

  r; W" _) }  J8 ]/ }  W點解大家都down兩次? XD

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1 W% n; o0 p8 k& S我第一次開睇左2秒就close 左
. L% r. L; ^9 F- Y( X( b* v/ s3 B8 k之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:( O7 _' c$ J, E
Filename: DSC01158.JPG5 {" |9 @$ A% w5 r5 w. Q2 i
Datetime | Downloaded by | Counts- {) c  n7 M3 _* S2 J
2008-01-18 00:25:24 | 阿感 | 2  s. c% Y- |: v6 Q8 e
2008-01-18 00:24:20 | playbr2 | 2$ u( X: j' o! K- l8 ]; L
2008-01-18 00:22:02 | 但丁 | 2
8 S  b( y; H0 I5 e# J- F, ?! ]$ e; G6 F' \
點解大家都down兩次? XD

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快d捉我錯處
, H2 u; X# [7 L) f8 B6 u+ y2 M話吾定我都打錯 + - 符號
- U8 Q+ i: b5 J' \' y: r9 |係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當6 z2 \; k: N5 V# T) t
不過,c=101n哥度(解除n係正整數的限制,只是整數)' `3 b9 C2 r2 J' D
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~)
# b9 [9 q; T% `* e. E9 f知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題. q0 B5 s- P# T3 u. H; M  G7 ~
但原先是不知答案,所以唔知有無失根
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8 A& ?4 f: t3 k6 W% Y; m4 p有時見到題目都感到有點不爽- i, G* M3 c1 B# _6 n
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 s8 T6 v9 K% O5 l: C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...." P: O( s) ]; i4 ^$ ?' 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:& U% o( j2 R2 O7 u4 x% \
冇答案ga....
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2條equation solve 唔到3個unknown ga....

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agree 4 P: a+ M6 T& L( p

9 o; ?- r+ m5 \& K$ ~4 r6 e2 equations 2 unknows
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if 3 unknows there should be 3 equations 7 L; \5 U9 }6 W; Y8 X  ?

* M+ Y8 ^  D8 ]% g) L6 I+ ]' Q2 i3 W, Smake it simple
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say . f7 Y# `- v3 y
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a + b +c = 3
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a+b = 2( N/ z4 o9 e" R8 {9 K$ R; Y

3 i9 D6 n* W" B& X4 ?then c is 1
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a = 2 - b % F7 l, i7 ~2 R! A# x/ Z" y2 R6 a4 e

6 z$ }( Z: _. Uso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
# g) k& j! g4 A' B+ L  O冇答案ga....% y4 |0 h+ q) ~7 D6 c

! ?" d9 I0 V5 k2 O  O  j( Y2條equation solve 唔到3個unknown ga....

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此言差矣~+ A3 R5 L7 D+ G; s! w

0 R4 x% O1 r0 C! _; Z1 P2條equation solve 唔到3個unknown ga/ f( j% z1 y" J! c
還欠一個條件,就是3條equation都是linear independent(線性無關)的  z& b+ P6 H. w: G
4 _2 N: V) u3 _; [& b
簡單點說,多元一次方程就是線性方程的一個例子
' l* n8 E6 O( F% s, X7 R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4 O; M, X% c2 _9 \/ u9 X" `
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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~)( g& X* M$ q) t. j; w
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
1 o* T' N9 p2 e$ p3 L有興趣就解解看
" R: n4 O) g4 A) @不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:/ ^: L( |5 b2 b, A6 \2 r3 c: O% [

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( ]3 B1 X0 w6 u' n9 ~: D; {  ?- ~7 g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:8 \0 G" U6 t$ I/ q- P
捉錯處就唔敢當+ a6 q* S, f$ b' Q
不過,c=101n哥度(解...

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$ Y/ e# q) O3 J. W0 v+ U8 J, @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
1 U, x/ |5 ~+ S3 |7 w0 @3 R+ b$ B反而適當地調節一下 , 咁會理性好多
& f: |; K% V5 s; d4 G就好似隻game 由12粒珠 加到13粒珠咁! P$ X" O& M4 S3 s' s$ |7 h
當''堂''好玩哂/ }+ y7 E2 }# |% }( Y  ~( W+ m: b1 V
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:  p9 G$ |' u; K( o
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p.s. 求''堂''字正寫...

; Y0 `/ ?' |& K! W6 Y6 l已是正寫吧