sakura310

Filename: DSC01158.JPG9 d" t# ^6 V4 I# }9 T' Y% _' I7 ^
Datetime | Downloaded by | Counts+ Y! `; a7 m( f) h1 P. L1 ]& K
2008-01-18 00:25:24 | 阿感 | 2
! `4 ^! F- A6 U2008-01-18 00:24:20 | playbr2 | 2, g0 f% G* Q4 o8 O. P6 g" T
2008-01-18 00:22:02 | 但丁 | 26 U9 ~$ m) Q7 m& @& G  N3 H  @* u) _

% F/ n& c7 U. ^6 v  O點解大家都down兩次? XD

playbr2

Originally posted by sakura310 at  12:27 AM:& W& e' ]4 i2 m1 A2 m3 m
Filename: DSC01158.JPG
6 U& w; I) j6 H& u8 GDatetime | Downloaded by | Counts
; u7 E9 _; [- K9 z8 l2008-01-18 00:25:24 | 阿感 | 22 N4 y3 ^- e& a2 q8 w( g
2008-01-18 00:24:20 | playbr2 | 2* w& W( Y  r: u; T8 L1 V
2008-01-18 00:22:02 | 但丁 | 23 i6 R. m- e, L: P9 Z9 }$ l

1 Z2 n7 q) }# i4 S點解大家都down兩次? XD

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, p! {! M7 {( V  ^$ z7 N8 Y我第一次開睇左2秒就close 左% n! p( a6 v" O+ d
之後DL (就变成第二次)

playbr2

Originally posted by sakura310 at  12:27 AM:* p  }" Y9 M  [
Filename: DSC01158.JPG/ O! p" c& }  h9 t) ]/ B5 K
Datetime | Downloaded by | Counts2 Y: G2 N% A4 R5 z+ D
2008-01-18 00:25:24 | 阿感 | 21 F7 T& Z) Y# c5 ?/ a6 @, ~; d
2008-01-18 00:24:20 | playbr2 | 26 f, r7 Y/ R& o2 C; Z+ U  S6 ^/ p
2008-01-18 00:22:02 | 但丁 | 2
7 O0 M# _/ M5 c/ L4 @8 u1 e6 |: F
點解大家都down兩次? XD

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% j' Y; B# u  L) l快d捉我錯處
7 l( j9 z8 w. x- u$ O話吾定我都打錯 + - 符號6 O; C* {9 [  e; {  N
係電腦打答案...的確幾煩...又哂時間...

sakura310

捉錯處就唔敢當
  U% |' w( X2 L$ n不過,c=101n哥度(解除n係正整數的限制,只是整數)
' ]1 I* s: t  M6 _) O: O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~)% `$ j: {) _% F4 t  t
知道{101,0,0}和{5151,2550,5050}係答案的話,當然沒問題8 g' ~9 t! _% N- B
但原先是不知答案,所以唔知有無失根3 K/ s) X' n% W7 u# |2 Q$ W

) }( J0 a: D: s  ~8 b. Y0 n有時見到題目都感到有點不爽
8 L4 z: l, N% Q! 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% Q6 |/ C9 D5 S" k8 P0 r
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...., ~/ ^% h1 F: k0 S* j

3 {" T7 d; s$ I. ]+ p8 O, o- z2條equation solve 唔到3個unknown ga....

Azuma

Originally posted by cutec at 2008-1-18 08:26 AM:0 t! g7 [+ [  d4 k0 K# i# r
冇答案ga....
! u; G2 i8 b  i% M" T& ]6 h8 H; [; z, g# _
2條equation solve 唔到3個unknown ga....

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! S- l' `" ^) P+ V/ n) Zagree
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6 [0 s! e4 H' f: `% f5 X2 equations 2 unknows6 U* `/ p. e9 M' }
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if 3 unknows there should be 3 equations
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  R( @# D; X: u7 b8 J( |- _, Kmake it simple / m8 V- F- S7 S0 b

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+ L5 y, i1 G( C" t* ka + b +c = 3
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) R5 Y8 g3 a- G9 ga+b = 2" ~* s1 y) T; Z  I  h6 u

& [9 i; ^* Y/ [7 Jthen c is 1
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a = 2 - b # ?+ a1 i) {4 r. ^  |- A* L* N
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so 0 = 0 . L8 [' v" C' s/ z

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sakura310

Originally posted by cutec at 2008-1-18 08:26 AM:5 ^# ^4 O5 Y7 J, F0 L. d! ?  K
冇答案ga....
3 _7 h/ m' }0 n! R  b- d4 A; x" g5 Z* b9 J/ S
2條equation solve 唔到3個unknown ga....

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此言差矣~  Y) c! l# A% N- T

, W& ]. `1 P; _" A7 [/ A5 r5 U2條equation solve 唔到3個unknown ga
: \; y9 ?, B) [- @/ l1 O0 V3 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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' j6 C' P  T* Q, @簡單點說,多元一次方程就是線性方程的一個例子1 Y: ~5 k* i" l/ g, `! v: A3 z
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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3 Q8 P$ U0 G( Y% `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~)
# x1 }( b4 H/ v例如 x^2-2(x+8y)+17+4y^2+z^0.5=0 就只有唯一整數解
; Q9 d% \: q; J. w* b% _有興趣就解解看
! \5 ?9 Z$ G8 l6 U/ {+ P& ~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:  `1 ]( q$ I2 [/ c* |# V1 ^7 _
捉錯處就唔敢當: d6 f1 Q/ H7 [9 T+ a
不過,c=101n哥度(解...

0 b) e# j+ \. i/ n3 @2 N- Q! I, }; B$ 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
; S# a# M: M7 x: k% O- w$ |反而適當地調節一下 , 咁會理性好多- J! r) x1 D$ P# L4 p. M
就好似隻game 由12粒珠 加到13粒珠咁
3 x1 W! N. u" t- h當''堂''好玩哂( w+ }. [/ f# p: @1 e) z; G2 A* h; ]

: w2 M6 O. w( f* e' Np.s. 求''堂''字正寫

QuiGonJinn

Originally posted by playbr2 at 2008-1-18 14:57:
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# w! j9 E2 H6 q" up.s. 求''堂''字正寫...

  g: @0 S$ g2 s/ y# }8 j已是正寫吧