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標題: | TriTri | A-Math 加分題 | [打印本頁]

作者: Triangel 時間: 2007-4-18 01:26 PM 標題: | TriTri | A-Math 加分題 |

第一個答中有獎

(x - a) = x - a
(x - a) (x - b) = x^2 – ax – bx + ab
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" R# J- X8 W4 o ^
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
如此種推，
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 H" D# |" T5 D' Y

[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

作者: 大大 時間: 2007-4-18 01:41 PM

點解你個問題好似有d問題

Originally posted by Triangel at 2007-4-18 01:26 PM:
; t- u& w) w" I9 |& r }- e(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc% \( v$ N' Z6 G4 ~% O- m# O9 V
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[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

作者: Triangel 時間: 2007-4-18 01:54 PM

Originally posted by 大大 at 2007-4-18 01:41 PM:% T4 y! f+ G" w! e- K* e. g8 J
咁難既=.="" v! ?6 j! [+ c3 K* M" l1 w" o1 B

' L) _: ^1 T" t[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

Thanks! 更正啦

作者: littlenic 時間: 2007-4-18 01:54 PM

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 ~8 q+ _9 |% v, n第一個答中有獎4 u% m0 D, ~: a( @# T

8 H/ @/ e- P1 m* _5 `7 q( I& r# H(x - ...

8 E' S, u! w% B: [5 B( ^7 T1 a
8 |/ o& q8 z+ J1 e4 I! j
(x-x)= 0 ，所以答案係0，is it?

作者: 大大 時間: 2007-4-18 01:56 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:
+ k5 d; `2 R* T" w q
* G9 Y g9 q; |' ~" y1 c4 F$ W% E* I- G$ N0 G
(x-x)= 0 ，所以答案係0，is it?

% v; W- D0 b9 K1 C: X. i' m
唔似a.math題
似IQ題=.=( ~( C! V8 a, U. Z' x# o

[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

作者: Triangel 時間: 2007-4-18 01:57 PM

Originally posted by littlenic at 2007-4-18 01:54 PM:
& X6 v* k& A! E! q; g+ o3 t3 R, |5 Q" ?0 x& Q u

# N9 \, _8 ^. D% W; J2 S(x-x)= 0 ，所以答案係0，is it?

, J Z# e( p0 L' R( ~1 ~: o

Bingo~

作者: waikong 時間: 2007-4-18 03:53 PM

我係學校個學生會單張見過

諗左一陣先諗到

作者: playbr2 時間: 2007-4-18 04:00 PM

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

作者: karen0123 時間: 2007-4-18 05:50 PM

(哭)~~~~~其實我都知係0.........
- b1 c& p5 |4 h) y5 ^; H, n- N
這條問題，貼落吹水版，名副其實

# z6 T. }7 z7 {+ {7 [

[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]

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