sakura310

Filename: DSC01158.JPG* ~4 q" ?; j( M& d
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2008-01-18 00:25:24 | 阿感 | 2
2 `9 Z0 [0 X4 m4 A7 A2008-01-18 00:24:20 | playbr2 | 2
& f+ C; e; e' Y% Q  L2008-01-18 00:22:02 | 但丁 | 2
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9 d' v$ I& ?* @! D( @0 u8 p  R點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:) k7 M" n6 t" d5 u- L# V; c
Filename: DSC01158.JPG- L& {  t  h" H* j# U$ p0 Q, ~
Datetime | Downloaded by | Counts
: I, d+ P+ H/ _+ J3 z2008-01-18 00:25:24 | 阿感 | 2
& f; s0 h* M( C7 j- s* J, v2008-01-18 00:24:20 | playbr2 | 2. d- `6 }/ x1 S1 T6 a; n4 Y
2008-01-18 00:22:02 | 但丁 | 28 G# b9 N& [. N- U* d9 |' Y

6 @0 }! n0 ~% {4 R/ L5 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
/ O5 j$ @  d3 P2 o8 ]! @8 b之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:. H8 O; d* d( Y4 X2 f7 Q3 N
Filename: DSC01158.JPG
) \3 z+ R; u- D* T* A7 aDatetime | Downloaded by | Counts
0 L7 q  C- k$ T- q; m( x3 s2008-01-18 00:25:24 | 阿感 | 2
5 _- L% W" F# J4 q2008-01-18 00:24:20 | playbr2 | 2
& B3 s$ N8 v* q" K, H2008-01-18 00:22:02 | 但丁 | 2! {, c0 W" `& |0 w/ M

3 ^4 U$ N. L/ n* ]6 Q4 B+ T點解大家都down兩次? XD

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* {3 Y- z/ b5 s: @$ x快d捉我錯處
( G5 f1 y7 ^8 ?' [: |話吾定我都打錯 + - 符號
9 M6 q8 G& l5 M- U/ A& Q% W9 _係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
3 m; B2 U6 x4 U# s不過,c=101n哥度(解除n係正整數的限制,只是整數)$ F7 W0 n5 T5 N9 L! Z' j
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~)  R( K8 a0 ~$ R3 m  a
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
3 A1 b0 Q0 c# {. O9 S) W但原先是不知答案,所以唔知有無失根5 J$ {! O3 @. X1 s/ M

& T3 m/ F; N" M8 |( t有時見到題目都感到有點不爽
# {5 c/ H7 g$ A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- B8 T6 c/ U' g1 |! a
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...." ]# O- W5 z5 _# p6 s  a
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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:* v  v7 N8 g, n
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 unknows
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$ r8 f  W* ~6 V+ V" D# b$ ]if 3 unknows there should be 3 equations * t: f* A! N& i+ p

# _; Y* G+ F2 |9 Z% u1 \6 o. m7 {make it simple
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$ K8 l  ^  r1 P0 Y- G. @say - m& h7 P; k# E# y" c$ N

+ f! [; _. h4 ia + b +c = 3
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* E2 M* q# }) R  {! v" o/ K7 Sa+b = 2* j  \( `' q2 B5 ^: x' X7 }

3 d: f; a& I6 ?6 ]. Zthen c is 1
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( i5 f. }. Z( ^' }a = 2 - b $ m7 \% v. M: _, V8 ~' \5 R0 C9 ~7 h
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:0 Z& E  v: n9 j2 w& i* s% r
冇答案ga....* y+ b5 G) P2 S/ \  `5 f0 V8 w

$ T* |9 D  _* y/ w; U2條equation solve 唔到3個unknown ga....

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5 ~5 g( x' q; B* C: e1 n/ a% y2 L此言差矣~7 [8 N/ P" y8 X' A
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2條equation solve 唔到3個unknown ga
5 S2 l, Q# j" k( ]' C) D* x4 j還欠一個條件,就是3條equation都是linear independent(線性無關)的; H; Z6 M7 z' Q) v  i- h& W* \
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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
# |9 }) ]% a5 {9 ?% B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% S  `6 _- x/ w- K( _9 k

0 w5 H# A  r& A% c* U4 S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~)
7 d' F% T! y- K# b& k例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- i% ~. l: _1 `. }有興趣就解解看
2 [' K$ R  f6 X9 i- x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:9 q0 p$ z: [- v7 |2 @, w
捉錯處就唔敢當
0 J. s. ?* @- E2 s0 F6 U5 ?不過,c=101n哥度(解...

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6 t, a3 u  h  t) ^6 a" v: ]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- l6 n! V1 [$ \: Z
反而適當地調節一下 , 咁會理性好多
7 _, G! p; k, b" J& L" u" r就好似隻game 由12粒珠 加到13粒珠咁
9 Q" T7 V- P* J7 G& m當''堂''好玩哂. E0 _$ Z/ {& F# R- G
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:* q- O! m  h  ~3 \6 v

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p.s. 求''堂''字正寫...

/ h7 W) p+ q1 n, _7 E% O7 F' F已是正寫吧