sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2- x/ b( _. {0 m8 g( w
2008-01-18 00:24:20 | playbr2 | 2( p* ~9 C6 [" U/ A4 J5 R4 P8 \4 W
2008-01-18 00:22:02 | 但丁 | 2
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& i0 M5 l+ ^+ @1 ?4 Q點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
  H5 ]8 |9 H: G, ?Filename: DSC01158.JPG
% r! L% q) O' O" [. X; MDatetime | Downloaded by | Counts) z- J6 u& V+ d9 L# J; r- O( N
2008-01-18 00:25:24 | 阿感 | 2
. C8 W- n- X7 C! b. A2008-01-18 00:24:20 | playbr2 | 2% ?/ f4 t* d7 @( A: @% v6 b
2008-01-18 00:22:02 | 但丁 | 2, u9 d. z! g* z: I0 [  c! n- b
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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
: y8 ?+ [1 z; `" v之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
2 W0 {4 `5 C' r" W) Q+ Y1 nFilename: DSC01158.JPG
0 U1 Q7 f) W" C0 _+ fDatetime | Downloaded by | Counts9 L  I8 _, j3 p# ~3 x7 k+ A7 J; y
2008-01-18 00:25:24 | 阿感 | 2& x& V' S/ u& X( Y0 `; O4 M$ z
2008-01-18 00:24:20 | playbr2 | 2
6 b8 x# `. F/ d- `# c2008-01-18 00:22:02 | 但丁 | 2- L" ]/ y2 F$ e) ?

* t  @, w1 G/ _# E/ W, I點解大家都down兩次? XD

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" c% O. [9 w0 l7 Z* k: Q5 a# ?快d捉我錯處
; l: T; ]! v! Y3 b9 E  d話吾定我都打錯 + - 符號5 W$ v+ m8 [; {+ W5 B3 E) Q: l
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
0 z: a9 t* K7 k2 N' S! ~不過,c=101n哥度(解除n係正整數的限制,只是整數): m8 d. }" |- o3 K; L9 y
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~)
/ Z4 `" d% b5 p/ V% c/ V/ X% q知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題  O" d3 d# Y) @8 }$ P8 p
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
# X: P* a; N: T, q0 S5 T) 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
* x3 B$ k/ F) Q: Y' u- [  F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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: B- `! @4 F8 `/ t9 K: W2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:4 z& p% w0 F1 z
冇答案ga....7 e' |4 u: p% ?) Q4 ~. i& @6 O' v
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2條equation solve 唔到3個unknown ga....

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  G# O$ i9 z+ c! a; j: X! tagree # a  h/ K, [* y1 R9 o

* |6 w+ l, L* j  O: K* M  v7 \; J2 equations 2 unknows
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2 A; d- l! L, s3 Qif 3 unknows there should be 3 equations
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: y5 U# B: t4 @7 z7 C5 A6 S: T: Mmake it simple 7 c. L6 c) R1 v+ [7 x' z
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say * ^$ e) c9 s' c( Y* I5 s

, N, W8 ^+ j" l& \4 D' G: K6 Qa + b +c = 3. _! S" }* r( c6 I+ G) R$ J

& t  n% z) j% J8 v" oa+b = 2! R' _! @. P- E' E  t- y0 ]

2 `' K8 ^# B) y- [; Sthen c is 1 ( c  S) {9 F' X3 i$ a5 L& l

$ p9 l/ X& E2 N" n6 p0 k1 k* {. f2 Ya = 2 - b
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' N% D+ T1 z" d7 t2 O9 Lso 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:/ D! ?1 x) H; g* B* W
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~+ K1 I, l+ u; Y  E0 H
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2條equation solve 唔到3個unknown ga
* B; ~) b  ?7 u0 b% a- M還欠一個條件,就是3條equation都是linear independent(線性無關)的' z! ?! ^5 G5 }5 Y7 c% g" D
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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
% n9 X2 X' @/ C7 d  q+ |3 T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3 H6 B) F, ~/ _: {

% @# q0 a& k- w* n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~)% \/ C! G2 p& |* g/ Z" c
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
3 A. P) q, [# N0 ?! i" h2 R7 \- e有興趣就解解看, J: w; i' \* i
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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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:# i, }2 B4 _" B/ [. @. J
捉錯處就唔敢當
( ?7 g' b' _  P: w9 D8 o- E4 R" K不過,c=101n哥度(解...

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' ~4 ]4 V: Z# R( h; d2 U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# h9 `( i( v7 C3 q
反而適當地調節一下 , 咁會理性好多
7 K: i* H/ K6 g# H* V! B' F就好似隻game 由12粒珠 加到13粒珠咁
5 j3 c1 |; w$ x( m" l5 \當''堂''好玩哂2 t/ B1 }5 T& {) O& W; 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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/ b: C% i. B# I8 |+ k- j2 Xp.s. 求''堂''字正寫...

) {+ E9 j& h/ A6 v* }5 N2 x已是正寫吧