| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 O" T1 S% d8 e; I+ G; r. |
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(x - a) = x - a: h7 S$ o- N# o6 `' i
(x - a) (x - b) = x^2 – ax – bx + ab  r; h; f8 B# X" e4 ]- Y. K, a" x
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
# Z5 I  @5 J8 B! v5 O3 Y  k(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
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(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; K( [( C; h2 ~3 j: ?/ g

Originally posted by Triangel at 2007-4-18 01:26 PM:
/ _% t8 k2 L" D4 f(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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0 z/ M* a# R. D6 Q. ~0 ~[ 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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 D0 |% d: z0 T& u& b: y9 R# W第一個答中有獎+ h4 G2 A! w4 [" n
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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:- c$ ~. e' q# _: ~, [
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(x-x)= 0 ，所以答案係0，is it?

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" h" U5 J  T, N8 O唔似a.math題
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1 l, X6 J* \* N* u- ^[ 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6 X2 e+ r- J: p) ^7 @
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, m6 T* u1 Z  c5 f! S# B

) A% z1 ^4 E& D$ j4 L* u. e[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]