| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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, f; v/ \  b# ]  T) j/ G(x - a) = x - a
9 i$ L# s% S! q3 O(x - a) (x - b) = x^2 – ax – bx + ab1 V' Z# N6 q- U" w% e+ G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 \' J$ Q- u9 i- a(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ _. p& N% k5 z7 T8 `/ r
如此種推，
* T0 ~% ~9 T6 G" d. P+ ~(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4 ]5 j/ m) g, R

Originally posted by Triangel at 2007-4-18 01:26 PM:
( T- w; z0 T( x0 w(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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9 s& f& U$ W; T[ 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:6 C: ?1 j0 j1 [% N# ]9 g
咁難既=.="
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2 y" C9 {8 O% |* \0 E6 i[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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8 B8 z- t1 n4 s0 SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:8 z* [% O! {" |. ?2 V. K( Y( g
第一個答中有獎' R) t( b4 u9 u9 c7 O  n& h- `

& I! P0 Z9 i. ^% }! w1 D(x - ...

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; j6 `, y3 A6 z- d(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:* o  E. v, \% J" e% y/ g
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* H; _) J" K* M7 P* n4 v
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3 ]4 F) `$ ^7 i& W- ]& E
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.........$ J( H# r# ]$ ]2 @" H+ m3 O
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這條問題，貼落吹水版，名副其實+ B. k  Z6 y1 c( t, s! P$ u
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]