| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎/ E; K9 d6 c9 b; U1 r
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(x - a) = x - a, P; g% `/ m( D) L) o' u
(x - a) (x - b) = x^2 – ax – bx + ab
9 _3 R' @" T% l* @" X$ D$ G(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
4 S! j5 S' G, p4 l# E/ ~& b(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
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(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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) ^* e% r( E" h' i9 N[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
+ M9 C) n9 Z8 y5 v3 S8 P" F(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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$ D0 S! b: }' I/ ^6 k[ 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 M% G6 z9 B1 R0 [咁難既=.="
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1 f, o$ x& D, ?9 J6 }7 c[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:+ o) C& s2 L8 b& x6 I- }4 w
第一個答中有獎; }  x) r% |/ P8 w5 e
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(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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+ ~9 I& a  z0 b(x-x)= 0 ，所以答案係0，is it?

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2 ?2 a) |: |+ j) Y: E' \& U# _, s唔似a.math題0 C1 `2 ^( }3 z3 f
似IQ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:
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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
( l5 g& n5 G4 y+ v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.........6 Y5 x" J* q$ E  b. F9 b8 j
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]