| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a8 s- r. |& T+ o3 Z- G) E3 \
(x - a) (x - b) = x^2 – ax – bx + ab& H. }( ^; t2 p! K+ q! o. S$ B  c
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 H6 b  a+ _0 F6 t$ R(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
$ s) q$ _* Z1 T+ q如此種推，
; s0 m( ?6 ^2 B4 ~+ l) G/ \( ](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???/ U& F% R3 I9 @& {' Z7 @
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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! ~- T6 l9 t- D. n5 _1 ]

Originally posted by Triangel at 2007-4-18 01:26 PM:8 v' N+ r: [; h' J
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc# H. A' q' v- Y; T& q( @% X% z, T
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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:5 q# g8 m9 ^0 M* ?6 F2 m
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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0 r" u5 _" M. HThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:! [$ l, d( n2 |0 ~  u
第一個答中有獎
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  u( N8 i1 e& B(x - ...

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(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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) J0 {5 Y5 I4 S& J' Y: u(x-x)= 0 ，所以答案係0，is it?

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) V" q! B. `# |唔似a.math題
  J* V- ]1 z. h似IQ題=.=! T# F6 n! x# J4 {
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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 \- E+ g- y1 p1 D$ E

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(x-x)= 0 ，所以答案係0，is it?

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6 K, J/ S! S; n8 X: ABingo~

waikong

我係學校個學生會單張見過* l3 o( m7 x% B5 Y. a0 F
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.........2 }, V. K& j) v5 `0 L% m
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這條問題，貼落吹水版，名副其實8 Q" v9 ~$ [4 b& L
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]