| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎6 M" C. T8 d6 e
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(x - a) = x - a
, f: b5 y3 l; H4 {5 h0 E/ s3 K(x - a) (x - b) = x^2 – ax – bx + ab
/ u0 I9 J4 ?* W1 e& @. }(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc2 V( D2 U1 t, z7 J; I) N
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
, W- m+ {0 A- H+ l* L6 Q6 ?4 w如此種推，
& a/ X; F3 [$ t/ ?: m7 N(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???, V4 [$ j4 [1 v7 S

+ {5 T. o, L8 A3 B6 N7 C[ 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5 y: B  r- m, ?, D0 @

Originally posted by Triangel at 2007-4-18 01:26 PM:
/ {# L) h! w6 |) R+ G  I8 l(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc1 c6 {, j( z* i8 F7 p

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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:( J; i* T% K! h, s
咁難既=.="
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6 B' v- U* M% G% b[ 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:
# K( {! T. s: X2 J0 r% r1 O第一個答中有獎* ^  \3 S0 l' {0 p
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(x - ...

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7 F% M' T2 Q- |+ p. J- X(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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' [3 o% e* l7 _, W/ m% w; G(x-x)= 0 ，所以答案係0，is it?

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, e' `0 i6 ~2 r* m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:) H2 U: P; s4 I- A5 v7 [

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' ?2 w; Z' b+ q. s(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4 e+ I' |$ _# f% z( P, l9 o
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
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1 a4 o4 R& J1 ]. S& a+ D[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]