sakura310

Filename: DSC01158.JPG0 P/ {1 }! m$ R" y5 [
Datetime | Downloaded by | Counts( p: g; @* d. v* ~, b3 s
2008-01-18 00:25:24 | 阿感 | 2
" e' ?1 W9 |% |! l" Y% B2008-01-18 00:24:20 | playbr2 | 2
" ?0 Z  B1 [( X6 V+ D2008-01-18 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:. r( Y7 B7 S2 w
Filename: DSC01158.JPG
% l0 ?$ C7 {' p- g; F4 hDatetime | Downloaded by | Counts6 g* \' t2 }+ I. z! a/ {+ n, S. E
2008-01-18 00:25:24 | 阿感 | 2! c( B7 I! v' k  X) e
2008-01-18 00:24:20 | playbr2 | 25 J# e) V/ M# S/ M& h
2008-01-18 00:22:02 | 但丁 | 2
2 D3 i3 O1 T, N% ?* V+ e- A) g; q9 {" E: ~1 b
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
( A9 P1 ]/ H  ^+ G$ F之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
/ t# M1 U4 K+ L9 U: S3 Y$ X8 YFilename: DSC01158.JPG" \+ X7 x, y9 ~! z+ b! d$ E1 T
Datetime | Downloaded by | Counts( r# F" o- X, L
2008-01-18 00:25:24 | 阿感 | 2
/ b" M' z& P" p+ k& }2008-01-18 00:24:20 | playbr2 | 2/ a) o' P* }: h
2008-01-18 00:22:02 | 但丁 | 2& S& C! `# z$ J& R
# E2 X+ F; l4 S  d& [( |" I
點解大家都down兩次? XD

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快d捉我錯處
3 c; d; ^, r6 m1 I9 w話吾定我都打錯 + - 符號2 t& y1 Y' |. J3 W* z; R0 `
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當# F! V+ h) b2 |& y% U
不過,c=101n哥度(解除n係正整數的限制,只是整數)
+ e+ O1 h) D: g+ g7 ^* T# B3 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~)
; i5 n1 k# ~( w- Z知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題6 Y3 Z# z3 W9 b) d3 E" l) |, x$ i
但原先是不知答案,所以唔知有無失根1 |0 p# e2 E6 o5 Z
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有時見到題目都感到有點不爽
" j2 G1 e7 Z+ v+ w  {% c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
, G; q. V, H8 R$ G0 z# n* w. B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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$ Z' H3 V9 O1 A/ N; x2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:4 d7 y2 u: u5 k" B+ x# c  U1 @. y
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% x" {0 [7 U% S/ s

- l# N4 j/ K7 _" M' Nif 3 unknows there should be 3 equations
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/ D- e" P% Y! b8 b6 X: nmake it simple " }3 J' M: @4 O

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" d" t  ^9 p% R# ka + b +c = 3
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a+b = 2
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then c is 1 5 ?1 W* `$ x# S3 c% B/ P
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a = 2 - b
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0 {& k2 x0 k( ~so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:% C* Q5 a2 C& H
冇答案ga....
4 s( Y, c: Y2 b  x5 {% f
5 M3 u+ u* a' R: d! i/ x2條equation solve 唔到3個unknown ga....

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此言差矣~
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0 I, E$ [0 f/ ^- Z2條equation solve 唔到3個unknown ga1 w1 l8 b( B$ C9 F5 E; Y* {
還欠一個條件,就是3條equation都是linear independent(線性無關)的
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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
+ B2 N" M5 R& D7 c( a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( \' b5 m  i) h
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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~)
' e$ Z+ q5 r$ Q; K例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- I$ q( c* [) i2 C4 |9 o. J有興趣就解解看
3 E5 ]! g3 K8 L$ v& C6 k9 Z, t3 r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:& _5 v4 `5 Y1 x
捉錯處就唔敢當% B; o. A* M# {0 O* ~( ~
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) V, D# O3 O: l2 N
反而適當地調節一下 , 咁會理性好多
4 m( n( N' h* _" F" p+ J, b7 V就好似隻game 由12粒珠 加到13粒珠咁! h0 Y5 Q% S( V- J, A$ |2 \
當''堂''好玩哂* ?: @3 ^- f# m6 r. C2 d5 n

! o& T' T: r, S1 W' t: }( [p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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% z$ i: e; w% p" N: D/ Rp.s. 求''堂''字正寫...

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已是正寫吧