sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
5 |6 \# ?: o2 o: ?: A9 s2008-01-18 00:24:20 | playbr2 | 2
9 G  ]8 X! t. x2 C$ k4 O. R2008-01-18 00:22:02 | 但丁 | 2  t7 r+ P; ]* U- o, q0 K8 E& b2 @
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:# y/ v1 t. d% M3 Y7 E
Filename: DSC01158.JPG3 h0 @+ O! b; b$ F2 r0 c1 m
Datetime | Downloaded by | Counts" [# v& |; j' ]3 f* n2 G# q- T
2008-01-18 00:25:24 | 阿感 | 26 n0 {9 i5 q" r. \) [8 W2 Q
2008-01-18 00:24:20 | playbr2 | 2  [* ?  V( v: n: {
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

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我第一次開睇左2秒就close 左+ w# r5 ?' h; Y
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
+ Z0 z! A+ ?# K0 Q" iFilename: DSC01158.JPG1 q) v* S7 r5 Q- a
Datetime | Downloaded by | Counts# {4 \2 w. h3 U
2008-01-18 00:25:24 | 阿感 | 2. a4 V- ~' G0 |* L. `7 f7 @
2008-01-18 00:24:20 | playbr2 | 2
/ f7 x- [; d* n2008-01-18 00:22:02 | 但丁 | 2
! B( d) Q5 m' Z1 ~1 G& h+ r: l& c1 c$ P" P6 h" U2 ^3 n: P1 m' i2 F
點解大家都down兩次? XD

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. \0 e+ L' A! d5 A4 V7 R# ~快d捉我錯處  v* P; P* L2 `+ E% _" {
話吾定我都打錯 + - 符號
/ p+ E, l4 x7 D( h/ r$ V6 i3 V& N係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當) ^6 e7 t, d$ u0 p+ a
不過,c=101n哥度(解除n係正整數的限制,只是整數)( z& i3 a# K$ G9 Y. K
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~)
1 G; }/ o, ?& |6 W8 G! M1 Z知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
, o3 H2 h& n) c1 Y  ]- s! w但原先是不知答案,所以唔知有無失根+ n: M; O7 g  T+ w6 {) M$ c' E

9 \7 g. I5 I2 C8 Y' L有時見到題目都感到有點不爽$ U/ \5 E* g, b1 X+ r: X1 ^( k3 x; Y9 l* U
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
/ a  ^' X: I! @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....7 H! r+ a# Z# d; G4 [! C1 E* D' r
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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:
3 ?( ~8 E, |6 m% F. C. ?/ E冇答案ga....5 M# r3 v, @- f5 a  f
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2條equation solve 唔到3個unknown ga....

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7 t+ T4 k& v, n4 G8 u5 C6 {& ragree
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2 equations 2 unknows/ V6 j- I' `$ Z
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if 3 unknows there should be 3 equations
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make it simple
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say
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. z+ e% m8 F; }. Pa + b +c = 3: }6 l% z9 v+ N# Z, p% g- d/ i
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a+b = 2
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then c is 1 3 J7 Q& ]& d7 `, t0 L

% M/ \$ O, `3 U2 p- v4 ca = 2 - b
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- @( |4 P1 v) a. lso 0 = 0 9 X6 d8 I+ f3 K" D5 T

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
% _* L* P( R3 E6 z" l% M冇答案ga....
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2條equation solve 唔到3個unknown ga....

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% _2 ~2 g8 f0 e" X# L此言差矣~
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2條equation solve 唔到3個unknown ga
; t% D4 u% X6 E2 G! n3 I8 h1 f還欠一個條件,就是3條equation都是linear independent(線性無關)的3 h& y( P6 z) o6 O
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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
5 C3 G7 w8 W- K- U! ^3 f5 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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* i6 n( L) G5 K3 Y+ O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~)8 }5 c; c# ?# A' \% e8 G$ D
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解5 f/ Z$ x# A) v
有興趣就解解看
/ p4 N  t: v( j* _5 H( O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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% a7 S) \  m# j( w9 A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:2 @* S: i$ Y4 {6 S
捉錯處就唔敢當
( k# S. N3 R) ~- D不過,c=101n哥度(解...

9 o9 Y. a2 i. b- G/ D" X& g0 Q: H9 j5 U6 n- g
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
8 b1 T: I  _" u6 b1 J6 S, [反而適當地調節一下 , 咁會理性好多
/ D6 x1 R8 Y; A/ X: X' q1 h就好似隻game 由12粒珠 加到13粒珠咁
# C* H8 r/ D8 Q6 B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:
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p.s. 求''堂''字正寫...

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已是正寫吧