| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  g- t% D' B# c8 P, l2 p( M
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(x - a) = x - a
( B5 I/ _2 S% \(x - a) (x - b) = x^2 – ax – bx + ab
# h; a5 X+ x2 B$ A' |/ H3 o(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc& O' n0 B2 v9 c! U
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd2 G* g. {* ^( [0 `/ f
如此種推，
- v! o# c3 D; k% S7 p+ k(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???2 ]- E* |4 _) J8 f8 h* a) |/ l. ~
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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2 v) l6 b- z: d6 m

Originally posted by Triangel at 2007-4-18 01:26 PM:: t/ G- d) [( D
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc/ |" \' h, I& v. g5 O: W* p3 e4 C

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0 X' t; O. y  f' Y' o8 Z[ 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:
4 k) V! o5 W& A9 H% l咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

  B5 y* K* Y) q2 j- h9 j; ]

3 L: ]; U. O2 SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:) f: D  b: z! x
第一個答中有獎3 E! N2 L) ~4 n: b

3 R2 ?- d8 U7 }(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:/ b7 t9 Q1 T# m" O/ ~- H
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題* J7 S5 I4 Z  T! x0 O
似IQ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:
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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8 _4 K4 C. l, A$ C% n- @; L
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.........: ]2 `/ `$ D+ m  x  i# Z
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這條問題，貼落吹水版，名副其實
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1 K" d7 k- i: G/ P. `[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]