sakura310

Filename: DSC01158.JPG3 ~  K: ^& L2 d7 {
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7 V2 @" @$ D" Y$ k2008-01-18 00:25:24 | 阿感 | 2) u$ c  A# f8 B  ?, ]4 j5 A4 D4 G
2008-01-18 00:24:20 | playbr2 | 2
, C3 v. t! K: m2 _2 a, }2008-01-18 00:22:02 | 但丁 | 2
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+ Q7 ~+ m3 s4 j3 @0 ]2 m( w點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:
' _$ S& O" Z. g3 v% J; o( y) T  CFilename: DSC01158.JPG
; G0 ]! ?+ Y% p6 |Datetime | Downloaded by | Counts
% A3 t! ^8 v, B: i4 h+ h8 i" W2008-01-18 00:25:24 | 阿感 | 2
2 d8 m1 w9 g( ?2 \2008-01-18 00:24:20 | playbr2 | 2
. T! k8 U' c" m, A; @2008-01-18 00:22:02 | 但丁 | 2
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) _- {8 ^8 C5 \' u9 I點解大家都down兩次? XD

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5 t1 t! i. ?: t0 u) p; ]9 [% P我第一次開睇左2秒就close 左( R0 v6 }. V0 z0 P/ Y4 Q* w) u4 R) e! K. W
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:
$ ?) {6 b6 X. J  W- T3 ?0 |Filename: DSC01158.JPG) t+ S$ l, D) T) W' Z! A9 Y
Datetime | Downloaded by | Counts$ u5 E9 ?3 G7 [6 t" e% z3 {
2008-01-18 00:25:24 | 阿感 | 2- B& {% l$ j9 ?  J4 B) y; F
2008-01-18 00:24:20 | playbr2 | 2
+ C5 Z& P  t/ j2008-01-18 00:22:02 | 但丁 | 23 T: c8 Z% v/ Y6 D$ R2 N+ T7 M3 X

3 T/ ?; y' `" _+ i: {3 u# C4 j點解大家都down兩次? XD

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快d捉我錯處. b  ]/ c+ L7 V% a# G
話吾定我都打錯 + - 符號
( ]& S7 K/ T8 v$ W8 ~4 v係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
2 x( L6 n6 g0 s2 Y, N  V( L+ r不過,c=101n哥度(解除n係正整數的限制,只是整數)
  J6 \7 x7 m+ O9 H) t0 c4 D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 ~1 ~7 W2 ?' [5 f  C$ T3 r) o
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題
8 M# B  o* \. a2 K但原先是不知答案,所以唔知有無失根5 k$ u# |5 N1 T% ]. X
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有時見到題目都感到有點不爽* N, F3 z2 S1 T' \  _
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: [8 _3 H/ \# U- k9 w
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....% s0 q! V" M' r; ]0 f7 s
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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:" N5 I1 O0 j( n- x* A
冇答案ga....
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1 D, O. S) K# ?$ F2 s6 L* H% a8 e2條equation solve 唔到3個unknown ga....

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agree
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. c/ R! H( Y7 {) Z/ C5 V9 w  {2 equations 2 unknows/ K4 n3 e# h) c  }& ~

* V' c6 _; ~! D: k7 Nif 3 unknows there should be 3 equations 8 v* k* C: D1 ], D( c" ~9 z

1 g) t2 V, O$ A; vmake it simple 6 l3 w8 R9 `5 r% R0 r" A

: m) F0 ]" V; usay
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a + b +c = 3( Z8 z/ h# y) U% r2 m+ q) X$ l
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a+b = 2
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then c is 1
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$ G$ H& e9 e0 M2 E1 \a = 2 - b " U$ k6 B! ]' R9 |
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so 0 = 0
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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:
9 j" ^6 O) v* f( f5 U冇答案ga....
% W7 R2 k$ }. L& R" Y3 l, v, e; k: K) b, D
2條equation solve 唔到3個unknown ga....

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此言差矣~
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$ [" Y* |3 }) G/ R& g* a2條equation solve 唔到3個unknown ga
" Q1 A( q8 Q6 F% I7 T$ [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2 v& C" Q& V9 G
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~)
" n  R2 m5 A6 j3 A) r3 L5 T7 J% B3 ^例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解4 I& u4 o1 A5 C) `. g5 K
有興趣就解解看8 L, v1 q- K6 g# j
不懂的話就問playplay,佢會知答案

playbr2

Originally posted by sakura310 at  10:22 AM:
1 x, a* e& R7 i; C" Q  Q/ ]
2 a5 G: P0 l* M2 B  V$ s; h6 k4 j9 ~3 C0 ]
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:0 m8 o8 n* l  e$ r5 ^9 @
捉錯處就唔敢當
# \$ B. o- Y& K% H+ g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
4 m- k* D. b, s! |9 J/ y* [反而適當地調節一下 , 咁會理性好多
2 l6 i) `  Z! w" \就好似隻game 由12粒珠 加到13粒珠咁
/ u) f& \6 E* |- F" R  g& x. R: n當''堂''好玩哂' i/ {3 W) ~" z& Q5 A" F
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p.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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p.s. 求''堂''字正寫...

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已是正寫吧