sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 24 z! h! N* N+ q, C/ p5 m
2008-01-18 00:24:20 | playbr2 | 2
: q: z9 M- o% _; \' D; n' a; l2008-01-18 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:7 I- W: v( s1 q8 W' u* }
Filename: DSC01158.JPG+ v- a, |: ~0 N, E' S
Datetime | Downloaded by | Counts  o0 p; W1 E% S# Z, }" w
2008-01-18 00:25:24 | 阿感 | 2
1 _  B2 p* c! x* R2 V: x2008-01-18 00:24:20 | playbr2 | 2
8 f' M4 e3 x+ i" p6 A4 R2008-01-18 00:22:02 | 但丁 | 2, ?) H- U9 |" F# ~2 J- P

9 Q  O  s: w1 e9 i9 I點解大家都down兩次? XD

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- o0 W0 }8 f/ g2 j! D) P& o& A; Y我第一次開睇左2秒就close 左/ X' S  U$ h6 A( y# g! @
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
$ W- h5 h, G' OFilename: DSC01158.JPG+ x3 r2 I/ l% K( q; M
Datetime | Downloaded by | Counts
7 W) m' R8 W  K  Y2008-01-18 00:25:24 | 阿感 | 2
3 v; ~/ l& H: q/ x2008-01-18 00:24:20 | playbr2 | 2
: f9 c/ e# f: w: v2008-01-18 00:22:02 | 但丁 | 2
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! @, E% W' @( q) a- S- C* b0 b; m9 R點解大家都down兩次? XD

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快d捉我錯處
+ R) ?  e8 [5 m- N8 u& J0 I話吾定我都打錯 + - 符號2 X# j  T5 I; q( i  s
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
3 J% U" U3 S. Y! r不過,c=101n哥度(解除n係正整數的限制,只是整數)
% g) ~' x* Q; [/ {) G- I; 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~)
( s) \1 n4 y' H# `  P8 ^知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
9 O+ n' F' O4 b0 E5 {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
6 b$ G! W0 m6 {# w4 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2 ?! S& B! ]2 H: 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....2 k6 }" U3 p7 ?% x( w4 w/ v1 ]

/ j9 ]& C6 Q3 w( Y/ V, R# e2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:
  O1 d% {+ ^( @2 E3 G冇答案ga....
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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 unknows8 @9 O* w' R$ [7 w% O5 N* B  j

) W( `8 G3 ~/ z/ N/ H6 I- d3 aif 3 unknows there should be 3 equations / B; _7 _$ ]0 h
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make it simple ! k& V! J0 C' y- l! |0 ]! a, Y

& L: i) M0 c+ [* Zsay
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a + b +c = 3
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. X; Z( U( p# x4 s6 }* K4 Ta+b = 20 U2 m1 y; q( [

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0 k$ H5 ~; i4 p( N( C# n8 Fa = 2 - b
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9 Q1 P4 N- H7 b( V! fso 0 = 0 , J; b. R2 v4 D" S3 J
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:7 s# q% z8 `! x# r2 A# f- y$ f8 `
冇答案ga....
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: T7 z# |; x0 e0 E/ P, e2條equation solve 唔到3個unknown ga....

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此言差矣~
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9 i  V8 C; p  B! [2條equation solve 唔到3個unknown ga2 ?3 {( `3 Q1 J6 B6 }/ `" [* ?
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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& _5 {' ^& b  `0 m簡單點說,多元一次方程就是線性方程的一個例子
% E% c4 E, w9 {' c: @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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6 }6 T, ?% r2 A% }9 c% e, i6 a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~)1 L! u' E: P) r
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解6 U5 r; V+ P3 \/ c' [; k+ h
有興趣就解解看
5 J- [6 e" Y, v1 [5 R* e, k不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:; H$ @3 U1 E" H- e# s+ W/ \
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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:3 E3 Q2 ?7 Z" m# m3 R
捉錯處就唔敢當3 q" ?2 l2 ~" C/ L
不過,c=101n哥度(解...

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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
. g/ e3 x4 y1 ]反而適當地調節一下 , 咁會理性好多( n* g' K! [3 y) f+ {
就好似隻game 由12粒珠 加到13粒珠咁' k! j0 ]( V/ {1 a- V/ @& Y
當''堂''好玩哂
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7 Q4 H1 m1 v; K& g9 Np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:, a# u+ x0 A1 [4 w

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6 V! o. q" y; K8 R3 M2 J% ^p.s. 求''堂''字正寫...

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已是正寫吧