sakura310

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4 V! o1 A3 b! O% ~7 D2008-01-18 00:25:24 | 阿感 | 2% Z/ P  X0 I' k9 G0 z1 l
2008-01-18 00:24:20 | playbr2 | 2
# g' R4 W: z/ P+ W0 e; x5 S2008-01-18 00:22:02 | 但丁 | 2  g. t2 c' d+ H$ {
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點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:* O6 Z0 G; Q7 s$ t% f+ l+ P! r
Filename: DSC01158.JPG, m0 N' p. {* B* W3 @
Datetime | Downloaded by | Counts$ E# |' Q: ]) f& I
2008-01-18 00:25:24 | 阿感 | 2) v( C" B! @3 K* B  z
2008-01-18 00:24:20 | playbr2 | 2! [$ Z! Y. T  m$ n; ^: }% t0 L6 ~6 l
2008-01-18 00:22:02 | 但丁 | 2
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  z, @8 u; N0 t/ Q6 l& s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3 ?$ ~% r, d: z6 S; o$ a
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:; z5 R9 M5 O: S7 |/ H2 t$ D6 k9 V
Filename: DSC01158.JPG0 M1 D) U9 q" o6 A. `
Datetime | Downloaded by | Counts: Q% N: G$ J# Y# c. M
2008-01-18 00:25:24 | 阿感 | 2
" C5 [8 i. ?" G& B9 L. {  |8 h2008-01-18 00:24:20 | playbr2 | 2: n/ P3 U! v: K1 K* ^1 J  j8 T8 M7 |
2008-01-18 00:22:02 | 但丁 | 2" X$ e1 B$ L# m* ?' |- b5 a

( J$ u* l: K* M( s% y1 l* X" E點解大家都down兩次? XD

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5 ^5 `0 L3 c4 f; t快d捉我錯處
0 y" W/ [; z' e5 K- f話吾定我都打錯 + - 符號
7 T8 t( S( P% y  B5 ~5 F3 F係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當. u5 \+ n/ j4 m
不過,c=101n哥度(解除n係正整數的限制,只是整數)
) o& `% n/ E, N+ b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~)
& f- b% y- }- {( F% I) v4 [- o3 P知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
: k- Z5 G6 x0 ^& H0 A1 p1 R) y/ y- }但原先是不知答案,所以唔知有無失根
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7 D) S5 e8 ]8 M7 {$ J. [& R9 V有時見到題目都感到有點不爽; I7 Q  P9 K. e2 }8 z: `6 o
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
, {3 E4 R2 k1 Y! V2 m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....+ u. V; M: n2 p; ?; I$ T& X
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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:
* k  i- U2 B; a7 k0 s# Y, S- |; |冇答案ga....1 t) w, z. s2 u. ^4 g* Z

0 N. B& n4 [/ @' L2條equation solve 唔到3個unknown ga....

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6 A( n0 m. ~) s# L, `agree " j1 E. B* j8 B& F# u  A9 F
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2 equations 2 unknows
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if 3 unknows there should be 3 equations
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9 P. v; C, ]6 Z5 M* [5 x, Emake it simple : I, T% }$ A) \( y/ [2 i

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a + b +c = 3
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# b* d9 t7 D* @( G0 t# Ca+b = 2
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8 `3 P3 @4 G, h! F, Y! i+ wthen c is 1 " ^- v$ d/ |( T& ~! v3 E
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a = 2 - b
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7 i' G1 F' Z7 b) m7 |' u6 I9 N, qso 0 = 0 4 P3 |6 ?& R' _

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
6 x' x/ p" E' j冇答案ga..../ [2 |8 \0 \$ T6 ^

' Z! Z" P' W0 Z! q1 o* ?1 r2條equation solve 唔到3個unknown ga....

% C3 N( E* z' @/ P; a+ w2 i/ ^

( e. q; v# A' u, k: D7 f# T* ~. E此言差矣~
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2條equation solve 唔到3個unknown ga: ^) |" y9 c4 b, H# o4 X( V1 h
還欠一個條件,就是3條equation都是linear independent(線性無關)的, F4 e1 c8 ]% c$ b! r% @

, ]  [/ I, m4 l# h簡單點說,多元一次方程就是線性方程的一個例子
) A3 X# x6 `; `+ h) S! k, j, d2 P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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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~)
$ g/ U0 l# U0 {$ T例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
. |: @2 n! @3 k+ _, a6 L有興趣就解解看) E% [0 K. h, O( K$ F7 d
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:# v; V4 L3 b1 p; W! E" H
捉錯處就唔敢當
# [( E: O7 i  m/ K2 H$ |+ N# }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+ m# P7 k. X* y( ~* Z9 I
反而適當地調節一下 , 咁會理性好多
6 I4 j% i3 B  y; k3 d# @1 d8 {就好似隻game 由12粒珠 加到13粒珠咁
: @4 E/ i8 X* x4 k當''堂''好玩哂
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7 }7 n5 p$ F5 x& ]p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:2 S: R8 J8 U8 H) p" U0 }
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p.s. 求''堂''字正寫...

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已是正寫吧