| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 M; O/ _: d7 s4 ]2 J7 z7 |, `
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(x - a) = x - a
/ E. W( h$ j. K) h(x - a) (x - b) = x^2 – ax – bx + ab
2 Q) {9 {+ m7 K* e- o2 D/ y: O7 Y3 ~(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 O7 Z1 p# y/ H(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
! |8 f3 ]' t+ W+ X. T4 T! j如此種推，
( W  ]1 \- G) N7 O1 S/ l) W- Y(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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[ 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. m/ z9 ^  K3 R' M+ N

Originally posted by Triangel at 2007-4-18 01:26 PM:7 ]1 ]- Y9 a# P
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* N; a1 Z/ z4 k8 z
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[ 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:9 [; T* K4 m( @8 ^& ~
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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, h' a! Z/ D  L  |! d  @Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ k1 |; @: }0 l( u第一個答中有獎
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(x - ...

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' i( @1 Q, \4 p/ m(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
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[ 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:8 y; J4 A# T$ z9 R( V

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(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過/ }. w* V( I# B7 o: }8 M
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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! f; X, c8 v! Y4 ]3 a這條問題，貼落吹水版，名副其實4 [  x5 _6 q- q" N; X  H
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]