sakura310

Filename: DSC01158.JPG
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2008-01-18 00:25:24 | 阿感 | 2
- {  N9 M. e6 }+ Z; E7 s# F6 m) b2008-01-18 00:24:20 | playbr2 | 2
. p7 ]: \- L% N2008-01-18 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:8 P4 v" t8 B# n; J  K) B
Filename: DSC01158.JPG
7 j% q# B6 n" hDatetime | Downloaded by | Counts: P! K" s! l6 }' V) s4 n# n
2008-01-18 00:25:24 | 阿感 | 2
6 r! S/ ?% ~& Z- Q: `# {2008-01-18 00:24:20 | playbr2 | 20 d3 p) L) d5 d* `
2008-01-18 00:22:02 | 但丁 | 2
4 `) y3 [7 _8 P; g1 e* o& D' m' `$ V6 R1 m. K
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6 t$ m" b9 Y3 a- f1 f% E. Z
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
8 U: m) B6 {% T; R& iFilename: DSC01158.JPG
/ q* j2 J" M2 xDatetime | Downloaded by | Counts7 X* l& Q/ z. N( L" v
2008-01-18 00:25:24 | 阿感 | 20 K0 w) ?' ~% W5 Z* e/ }/ c" z6 Y
2008-01-18 00:24:20 | playbr2 | 24 }: k& r+ {8 Q, w, Z
2008-01-18 00:22:02 | 但丁 | 2
: u) t; q! m  k: A& @; K  R8 Q' E" n
點解大家都down兩次? XD

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$ e$ ]8 \+ w5 _' x, C: o1 \$ H快d捉我錯處
1 r4 \9 `: k" k% m2 x5 W話吾定我都打錯 + - 符號: i5 |/ b/ k* ~  {$ N
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 Z, h; t2 i: O% @- l% G& }" R不過,c=101n哥度(解除n係正整數的限制,只是整數)3 `$ @4 m* m! f. d% V: 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~)- A8 J# J' R- Q1 z7 X1 s+ `" f: c
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
1 k) M! _# J& E4 \# A7 h1 t& o但原先是不知答案,所以唔知有無失根
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, ~( g# V# e  ?4 o: B$ o有時見到題目都感到有點不爽! e" }9 F5 x! C( |: ]6 k" x
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
- {6 |; h" L0 ~3 p# @+ v/ {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...." D" M* @9 Z5 `8 j: z8 Y
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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:
! S9 S; T- U# b5 }5 p! s+ l2 _5 q6 _冇答案ga....
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6 I) o2 z0 T( I- N1 y/ l2條equation solve 唔到3個unknown ga....

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, c  a+ h; _: c* vagree # L- d; ]8 @/ h8 V( T

/ t  v& ?9 K  l2 {+ s2 equations 2 unknows
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7 C$ l0 b7 P+ ]/ @+ @, l9 D9 `; Cif 3 unknows there should be 3 equations
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make it simple
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say
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a + b +c = 31 a' N+ c9 U# A+ Z4 p

7 p5 F, s9 V( l6 z% u1 Ga+b = 2
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5 W# _: P, D0 o( ?+ Bthen c is 1
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a = 2 - b ) d5 a9 R1 I% q0 G2 d6 _" R
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so 0 = 0 ' E4 g( {$ v% ^* t9 V
0 |6 a2 _4 m+ ~3 R

sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:1 \, K+ t5 i5 k2 T8 q7 `  j4 `
冇答案ga....; J( c/ q7 K; U% q* A. k6 I

( J2 a9 s& N. ?" d0 P4 E( A7 ?& w3 C2條equation solve 唔到3個unknown ga....

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) V, Q) @- V! |  S5 |2 D此言差矣~
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2條equation solve 唔到3個unknown ga) L5 D. |: E' z. p2 P0 @( z- ]. C
還欠一個條件,就是3條equation都是linear independent(線性無關)的- h2 q( J1 B8 Z# R

- k0 _3 S4 y# A6 s! M簡單點說,多元一次方程就是線性方程的一個例子
+ m6 L6 I5 V& f( ]0 O: p) P/ 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
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6 }- A) B9 n9 f/ ?& G" u/ u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~)8 x" z) R' T, x- M
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解& a& Z. `' J* D: Y/ }* j
有興趣就解解看
# v0 x. b/ O# c" A不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:: d3 O3 Y5 i) d4 R' O. b" P# f6 @

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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:8 j- a! `/ M. A0 @6 ^
捉錯處就唔敢當
; [; f4 V3 T) A不過,c=101n哥度(解...

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1 j# w$ i  f$ f3 }1 p$ K1 e8 T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
' o/ R( Q3 ~* f- B3 F+ {" y) R6 [反而適當地調節一下 , 咁會理性好多
# W% i7 S+ s3 t$ J* h! g6 A就好似隻game 由12粒珠 加到13粒珠咁, P( k1 {- B) A* c9 Y1 W) n# k- J) W
當''堂''好玩哂" n% h5 u5 {, I( O2 X; N9 N8 Y
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:$ |7 o" |! ?4 R; c
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p.s. 求''堂''字正寫...

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已是正寫吧