sakura310

Filename: DSC01158.JPG
3 ]' T- \0 r% e4 d& wDatetime | Downloaded by | Counts
/ F* B# o3 s, l! ~+ F* [% j' Y! w2008-01-18 00:25:24 | 阿感 | 2
$ Z6 b% f6 B8 Y7 e( ~5 @; x* }2008-01-18 00:24:20 | playbr2 | 27 P* V3 c+ ]9 t5 Y+ C
2008-01-18 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:
: ]; u( q" U# p! z9 s1 n; ?/ tFilename: DSC01158.JPG
* g1 D: j& j$ \  Z- O/ VDatetime | Downloaded by | Counts4 ], L9 F0 [; f/ K, Y
2008-01-18 00:25:24 | 阿感 | 2
% K1 k& S4 T* Q4 l3 j2008-01-18 00:24:20 | playbr2 | 2% \1 I0 @2 e2 a
2008-01-18 00:22:02 | 但丁 | 23 h5 }5 j& V( J5 y$ H9 l9 f$ ^9 H

8 h5 N2 q$ ]% Q& y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
* {2 N& B+ |. C- e4 C1 V* M1 t之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:5 t- G- M* i* h
Filename: DSC01158.JPG. a" A! O* o; K( q1 A4 R# Q
Datetime | Downloaded by | Counts
+ W5 h: C; h2 _3 P. V  ?7 i2008-01-18 00:25:24 | 阿感 | 2
6 v# ^# P. @0 D* j+ e7 U2008-01-18 00:24:20 | playbr2 | 2
6 W3 Q8 E+ t: s& o8 U; r8 C% O2008-01-18 00:22:02 | 但丁 | 2  b2 r2 p( i" o' c& n4 j
# }3 v1 J( {+ m. [( X0 J2 F
點解大家都down兩次? XD

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6 C0 u" d7 O4 ?6 R快d捉我錯處
7 h' X, s5 e$ \( @! a. ~話吾定我都打錯 + - 符號
. p7 p; F8 f1 T6 ^  K5 V" b係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當' v" M5 X% A% r% G
不過,c=101n哥度(解除n係正整數的限制,只是整數)  q0 t/ \2 J; `$ e
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~)3 a. u+ ^+ f7 Z1 c* F$ w" n( X
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
. u: z, h* e+ b1 ^5 F但原先是不知答案,所以唔知有無失根0 n: @9 @1 C' e& q8 v! e/ l

. t2 k" k7 S) j) s+ x) ~5 X有時見到題目都感到有點不爽4 N1 L  X2 D! G; W$ J' c( f
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 X1 Q) n" V6 p* }7 ?2 O1 G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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2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:6 x! K, H: o$ [: x
冇答案ga....
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3 y% U4 A" }! Y) {! Q2條equation solve 唔到3個unknown ga....

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agree 2 f8 u5 z9 g2 I5 s: w
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2 equations 2 unknows
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& W  a1 a3 m8 Bif 3 unknows there should be 3 equations 3 F& s9 ]0 }  g9 ], Q
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make it simple
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say . X9 f" e, Q. L2 d, O" i0 u

) q5 I# x0 I' p' \0 R& J( L' sa + b +c = 3& X# k$ I5 C9 H

2 w1 G0 C$ I2 d" h- f- Ya+b = 2
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then c is 1 5 w- T2 w/ f2 ^% J2 O* q

' U, r! O; Y3 Z& a* z+ va = 2 - b ( b" d4 Z0 }/ D& u9 \8 p
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
, |  q& E! E$ k. s" v冇答案ga...., N) v; c( D' T; @9 ?2 p

1 }. o) K1 l4 {! H9 S+ e# E: k2條equation solve 唔到3個unknown ga....

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! t9 O* m  h8 y此言差矣~; D% s% V" m, o; i( Y5 |
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2條equation solve 唔到3個unknown ga
9 [) W3 J0 [' C& n+ j# }% f$ ^# f6 w6 u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
# g/ d6 n( N3 ^* P; t. D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4 b1 m# H7 U/ E4 d+ q

* e/ x& z# d! i- V7 n% l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 [/ c) D2 |- P" G8 Q* x$ Z
例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
- ?0 y: T# P. s0 e有興趣就解解看3 I2 a" N- h- J; N
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:
# f4 g# G  L7 A- j! ^) U0 I9 b捉錯處就唔敢當+ f4 Q) f: v/ R" r; q
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
" p0 ]# _' g$ v反而適當地調節一下 , 咁會理性好多7 h7 z# f+ n+ z6 h+ `
就好似隻game 由12粒珠 加到13粒珠咁
1 J, G9 u* C2 G7 v) O6 h! C; R當''堂''好玩哂
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; q/ Z" ?$ z9 o0 l& \: Z# P: P6 i8 mp.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:. V. [; p" w4 w6 K
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p.s. 求''堂''字正寫...

) C7 B! K) Y/ b$ Q' G6 t已是正寫吧