| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a0 v  ^0 Q1 X( o* I* _* S7 ]
(x - a) (x - b) = x^2 – ax – bx + ab$ ^  r+ [$ N8 Y0 s! ~& p" ]
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
* q9 l7 E* }9 n) g* }2 S% G5 o(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd, F" U5 ]/ d6 t. F
如此種推，: r$ y" D/ g; Y% x
(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
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Originally posted by Triangel at 2007-4-18 01:26 PM:# H# |6 R0 B, l$ g4 [: c
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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. O7 [+ M. V+ `[ 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:& U; Z! W  K4 L! y5 [$ H
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:
; K& B: O1 D' u( R; \8 U第一個答中有獎9 Y' u: R6 [& `# B4 \

6 {7 `8 a0 J' u2 _4 t(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:: v$ @  P7 _+ X, i
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+ S1 }: N5 Q; u. a/ X(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
9 s  Z- e; c' }: R2 f9 E似IQ題=.=, t% \* S" I1 x/ u: y4 G* }2 N
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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. Z  b0 |  F! m9 l7 J2 H/ K
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.........1 w2 [. F' i7 t+ ]

  x5 w( s. v, T& T/ j這條問題，貼落吹水版，名副其實7 c* {9 Y0 {. p; U
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]