| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎! ]4 I) Y, y. a: z
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(x - a) = x - a# d1 [* u9 d& b
(x - a) (x - b) = x^2 – ax – bx + ab
# w6 W  T& ~4 O) t# Y7 {6 Z7 S(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! R" j: R& y; k2 n+ m
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: O0 `1 m9 m; P0 x
如此種推，
) t# D) C! S) [* k+ n! X  H/ Y8 o(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ g) s0 B" [. P  m$ c5 `
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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: V5 Q2 }( d; M

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 P' i9 z6 r7 X. E$ G0 x0 L7 C5 S(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc' \7 |' g9 S1 R0 f

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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:$ }( @$ Z# Z7 R4 H+ g( d
咁難既=.="
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[ 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:2 G/ a% Z# E5 u) x$ U8 f
第一個答中有獎
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1 l  q* E7 K* ~9 b0 f, |" C& u: l(x - ...

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3 l5 a' Z) i- t6 V(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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: H7 U# r% X) w# N(x-x)= 0 ，所以答案係0，is it?

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8 H1 J" H3 H- ~2 k% v唔似a.math題
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& N8 r0 l# V; p1 I" C4 i[ 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:# P) Z! z# t% p5 m

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# R* z6 ~/ n0 V3 _(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過: @9 w1 f1 f  [: v0 \- A
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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這條問題，貼落吹水版，名副其實( H5 G6 o9 L+ O% M0 Y9 P# D3 M0 G0 N
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]