sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2% \' p. ]  C% O- n7 V
2008-01-18 00:24:20 | playbr2 | 25 ^" f% c: N, y0 Z8 L3 {% j. b
2008-01-18 00:22:02 | 但丁 | 2
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
$ [+ a! F. z& J) [$ SFilename: DSC01158.JPG" M: R( O" R% T$ G3 P5 q* Y
Datetime | Downloaded by | Counts- D' i2 W9 q: q# H3 @
2008-01-18 00:25:24 | 阿感 | 2) k* T9 h. O/ S, X- P
2008-01-18 00:24:20 | playbr2 | 23 _9 Z/ @- }5 ]; T7 f3 S* y+ b. [
2008-01-18 00:22:02 | 但丁 | 24 K$ U) u8 C$ n$ h" \& _

# n0 I0 ]# |1 E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
8 G' k) F$ _$ `! F8 l6 m之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
, Y4 Q2 J; m# B7 }Filename: DSC01158.JPG( L5 x+ @8 s2 U+ s" Q  n' W
Datetime | Downloaded by | Counts! K: z4 A! t$ S/ |% Y
2008-01-18 00:25:24 | 阿感 | 22 \9 o5 g' x4 N# l' @& m, [6 ^3 f
2008-01-18 00:24:20 | playbr2 | 2
$ I0 D. J, R* k; ]; f& A/ l6 c2008-01-18 00:22:02 | 但丁 | 2. k  w* C. N7 t2 d+ Z# {
, f$ O+ F2 A2 U5 Z
點解大家都down兩次? XD

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快d捉我錯處
  t: m' L" z# L3 S/ V; z* J6 M3 V4 s9 v話吾定我都打錯 + - 符號
" [( x/ t6 ], @! S- s5 F+ V9 M係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
* I/ \0 ^  P9 |不過,c=101n哥度(解除n係正整數的限制,只是整數)
9 I7 L; _' O7 s' d+ _" }/ W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~)
2 y9 {8 H) g' W# U1 c: Z9 q& m知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題, x4 {9 i) E+ v2 [7 n
但原先是不知答案,所以唔知有無失根
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有時見到題目都感到有點不爽$ Q% j- j5 Y( G' D+ t2 ]" i
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8 p2 C/ w  i( r: P3 o, D0 s% Y
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....- d9 |' c1 u2 f! K/ W) p
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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:
/ _( L( m  r8 \0 s" v, R冇答案ga....* @& P9 P/ ]0 B  x: }+ V! r- R4 y
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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, r. v6 q/ c* x
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if 3 unknows there should be 3 equations
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make it simple 7 y; g5 f5 |6 C' l/ o4 G; \& |

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a + b +c = 3
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6 H+ V! f# u/ v" Fa+b = 2
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" g  \( f9 q* d6 m% V* K7 ~then c is 1
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a = 2 - b 8 u! x+ |3 t$ l/ Q
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
' n# o! l2 r; A+ I! g2 g" t冇答案ga....
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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
# U9 c- h4 E' F, M" v. _還欠一個條件,就是3條equation都是linear independent(線性無關)的
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* p& _" q% l- @( r: S簡單點說,多元一次方程就是線性方程的一個例子
0 ?" M& K0 ?1 T2 ?% C* S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' N2 _8 T0 D& S" l: j* Z- `

  c: ?/ D4 E) |, q) D6 p+ Z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~)
/ e5 a" h! Y! b+ p3 I例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
. R2 @) z  c  G有興趣就解解看
; G" B! `$ h1 R; s: j不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:& P  i) [( N1 r! U$ n) `

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5 V/ P: d3 v2 |8 B5 H) [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:
, a+ m! S: x$ C' {捉錯處就唔敢當5 J0 m5 b  k4 `4 L
不過,c=101n哥度(解...

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7 u/ |5 {+ Q' S. X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: S- L" }9 j6 W
反而適當地調節一下 , 咁會理性好多& k- z" m1 D. o: Y2 w2 a, q" S
就好似隻game 由12粒珠 加到13粒珠咁& N" \6 \8 X2 Q
當''堂''好玩哂( o" I2 I1 B4 c  H, R, T
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:9 s6 _6 ^. `8 L* a3 D( j6 t
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9 C8 e, E2 n& f; g( o; T( ?p.s. 求''堂''字正寫...

* z( O0 P7 H) }已是正寫吧