sakura310

Filename: DSC01158.JPG, k. j$ D, C5 Z, c: o7 ]1 X! p
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6 S& v3 I7 x4 ^0 _0 t2008-01-18 00:25:24 | 阿感 | 29 ~+ u8 ]5 m2 |7 t: S
2008-01-18 00:24:20 | playbr2 | 23 E6 r4 b' E6 }/ X8 z
2008-01-18 00:22:02 | 但丁 | 2# W6 _! Q9 N9 s9 [* ]1 q% T0 k" ?( X

* H" u3 b; S1 H! ]5 D點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:% M4 D# ~+ o" @
Filename: DSC01158.JPG) H2 x+ b8 s3 u- N8 n3 }
Datetime | Downloaded by | Counts0 {7 T; ?( ]5 R( m# d9 j2 U
2008-01-18 00:25:24 | 阿感 | 2! ?  H7 w) U2 T0 p5 o, ~
2008-01-18 00:24:20 | playbr2 | 24 J% V) b$ i& Q/ r: J% n+ u8 A
2008-01-18 00:22:02 | 但丁 | 2
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! k- B! A# v6 r7 r, i點解大家都down兩次? XD

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  ~, L; s# e7 K% [我第一次開睇左2秒就close 左$ b1 h0 a: E- w' b
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
9 B" f9 m" D# G0 o/ hFilename: DSC01158.JPG
. Y4 {5 q) T) M' {( S2 z* o* RDatetime | Downloaded by | Counts
' r# r- z  s* s* f8 y2008-01-18 00:25:24 | 阿感 | 2) H; Q1 p/ F1 U. m: ~3 ~) M) n
2008-01-18 00:24:20 | playbr2 | 2$ ~3 L& [6 ?" Y
2008-01-18 00:22:02 | 但丁 | 2
3 M$ F. o% ~: E# m5 _, k4 j, ]# E) @) Q7 f, Y
點解大家都down兩次? XD

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! F" O9 a& t1 Q/ k" R) o* L快d捉我錯處
8 r% ~/ Y) G; s$ I% ~) S2 H話吾定我都打錯 + - 符號; B& b1 P* _6 I  z. n* ~3 \1 u
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
' o- [$ s! C" R不過,c=101n哥度(解除n係正整數的限制,只是整數)  v* B; j0 X3 N  V5 x% V  ~4 P
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~)3 D% N' g1 z6 [  g# h* ~( h2 k
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
8 k: K3 x+ k& ^  Q9 L6 w但原先是不知答案,所以唔知有無失根" G8 C$ x, C$ x: n! y

. M9 N% a0 `4 o有時見到題目都感到有點不爽# B  v, U7 P' a5 ~
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
# d2 R5 {6 A4 H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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) c* O6 a! w, T" ~$ p2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:8 }& i) a0 T9 T' p8 M$ J
冇答案ga....: v* Q: y* E  v  x7 h& G1 E
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2條equation solve 唔到3個unknown ga....

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agree
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+ e- R; I3 J- ^/ I2 equations 2 unknows: b+ O" b7 j' ]7 |

( L. y/ \' j! v$ x) ~+ sif 3 unknows there should be 3 equations , v$ X2 O7 K) Z* w" v* }* ~! O

3 n# L0 {& R# g: \+ M2 D/ [8 tmake it simple
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9 D% ?2 j5 L1 ~2 Q& w9 ]- Ksay
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' F8 P7 h6 n$ k  fa + b +c = 3
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' X# P3 d) Z; x& v5 ja+b = 2
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1 T' q+ g+ [& }0 s. Z. K- G+ othen c is 1
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2 Z2 u5 l  ?: ya = 2 - b 6 e6 }! G4 c, v8 i: N. P# e0 Q8 W% y

8 G3 C% e5 O8 b2 i. p# k+ b8 qso 0 = 0 0 f. x$ A$ d* W1 L/ P% T

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 o4 u. G6 \, X2 z! N" O( |3 ?
冇答案ga....5 p! J7 J: _# r8 U, d
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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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2條equation solve 唔到3個unknown ga
* f. m* i* j! _/ N/ X1 X. Z8 J0 Z9 d還欠一個條件,就是3條equation都是linear independent(線性無關)的+ W/ e, o) y: }& U% n

) X9 ^! E8 b3 J! v- g1 k& q簡單點說,多元一次方程就是線性方程的一個例子
. S# f, u3 Y$ n$ g4 C3 V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~)( V  a! O) p9 x* S, v
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
6 m! L3 {0 B& R, ?' [有興趣就解解看  a1 _1 l$ m! |
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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- B. z6 r7 I/ o. `2 p3 z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:
6 f5 M8 f0 ~" P. s! F7 I: C捉錯處就唔敢當
6 d9 j1 a3 z/ s: T8 X) O不過,c=101n哥度(解...

0 u' {) i2 u* L* @: I% }2 w2 }6 r" Q9 F/ K
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
7 K2 B' s+ c" Q, \8 F  x1 I; ?" m反而適當地調節一下 , 咁會理性好多
2 e( D! h! D8 V* x  I就好似隻game 由12粒珠 加到13粒珠咁$ m7 h  g" h1 m4 m. a
當''堂''好玩哂, C  C5 X- g, f. ?
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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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+ r+ f& K; o2 M0 c+ l: p# p2 np.s. 求''堂''字正寫...

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已是正寫吧