| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
- X5 _3 \6 b# o! h5 E(x - a) (x - b) = x^2 – ax – bx + ab; n( G7 F( {$ N7 t
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
& e, o% ?" c5 e& `; d2 |7 _+ b(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 I, _( C9 K  Y/ i% l
如此種推，4 ~& t& _+ L- f! z1 d" U) F( R
(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% @3 Y8 _7 u! B  U4 c1 C% d

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 F* \5 ~" R% @$ l" q( X. t(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc$ z. I! |3 B" F4 X5 ^1 f" N3 Z$ t
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' t& _$ i! c7 T[ 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:2 d' d* r. [' X
咁難既=.="
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' e3 G5 j! u( V/ d) s, @6 B. c[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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9 l% _: L' X8 q( k9 ]: Z9 fThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
0 I" z! G4 ?( h0 Z' B! G% ?第一個答中有獎7 q! c) m% ]$ T$ ^  j& }
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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:
  j( U# L- f& W8 b+ L6 Z: M* O, S3 W: T0 Z: F2 f

- I) {3 L" b: C# t/ F(x-x)= 0 ，所以答案係0，is it?

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$ l. a0 ^' r- U, V5 t- H2 N1 J  Q唔似a.math題
7 |/ u( B7 Q. M9 f7 Z似IQ題=.=5 d1 @% ]% _  g$ ~' R
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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:. A! F/ B* `5 e

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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
& G* ~# `, {( m* }+ X+ O0 N* {6 J; k& J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 `: R: G" O3 [  r
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]