| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a) r& Y) ~, t. i" _2 F
(x - a) (x - b) = x^2 – ax – bx + ab
+ d, p0 M- n' N7 E- [1 A(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc0 C  a, W, h: `5 ?
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd' F& u* q0 p# [: w3 B; _
如此種推，
5 y. G6 d" j# H(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???3 f+ _% ?# w0 q: P
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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7 }9 h" @* C4 l( q. S: m

Originally posted by Triangel at 2007-4-18 01:26 PM:
* D2 d7 `* }9 i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc  {; O* C3 t- K3 M8 `

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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:
; m- E- ]' D9 c* {5 y0 w咁難既=.="0 M* i2 b* R6 k

- `1 t, J, V9 f- b! {# z[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

$ v4 w" R9 H$ ?

! e* u: A5 u6 d- L: m! a1 AThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 c- l3 t% W5 L9 m) G, ?# j第一個答中有獎5 A) B% H' k' w) m3 y
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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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+ F3 y+ ^( C! i(x-x)= 0 ，所以答案係0，is it?

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& s0 p5 y: @' `2 Y8 f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:
( ]; _( k: q) D# U2 f  Z: r1 Q  g; q* T( Z3 n( o$ V

, p; `5 g& p9 D6 u" Z(x-x)= 0 ，所以答案係0，is it?

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! p: \4 n  G$ R; fBingo~

waikong

我係學校個學生會單張見過' _) [6 z' M  o6 ]9 H: I& J- t
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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/ }8 e& A6 V, m6 a  M+ v1 o# s+ p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 ]