| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, b% ~, \3 l; k' C+ R- s' {

9 g: Y% e! `/ Y5 |2 O(x - a) = x - a2 C. y# k1 R3 j
(x - a) (x - b) = x^2 – ax – bx + ab; |( |# D. C1 i! v  x
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc1 U. a% C: S& i
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
2 k2 E+ }' T- v) F3 H3 B如此種推，  P- H9 p; c1 E
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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# F. T$ _1 J' l[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題3 V  w% J* L8 J% j

Originally posted by Triangel at 2007-4-18 01:26 PM:% e. I2 L" A1 f* R* |
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- k; I; u- B6 W7 r

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7 d- I- u& C+ L( ^6 O+ x) @[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:7 Y/ C" [/ W/ A% N8 m* L
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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% m1 _0 {) ~( g: v/ {- [5 l, u5 XThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:8 @( v2 ^- Y# F1 @& D1 X
第一個答中有獎$ B4 X# q- E( Q; U7 @! ~$ N5 w
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(x - ...

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+ a% b. @. h6 Q4 Q1 f8 J(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:1 \) G0 P/ C6 e4 z1 l7 y9 W& F
0 R5 B" p$ V: V
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(x-x)= 0 ，所以答案係0，is it?

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; [" U' R; C4 t1 A  X# Y唔似a.math題8 U) C, c1 |4 `$ L
似IQ題=.=/ x! p0 I5 a+ w8 ~/ k

( y' C6 C' e8 \[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:: q7 q/ e1 Y3 Q" r0 x, b: c
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7 i) E5 {) j9 D. T# E' R' X5 \+ C
(x-x)= 0 ，所以答案係0，is it?

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8 ]- o* G+ m% h: yBingo~

waikong

我係學校個學生會單張見過
: U0 a- N- B0 h3 U3 ^& h諗左一陣先諗到

playbr2

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

karen0123

(哭)~~~~~其實我都知係0.........
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4 G9 v$ v3 c3 z; r# J2 i" O這條問題，貼落吹水版，名副其實
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9 n7 `7 w8 n8 ~  F/ @7 p  O[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]