| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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' V3 ~' R9 k2 `9 H. W% l9 m" ~(x - a) = x - a; C7 W! _+ S1 {9 B
(x - a) (x - b) = x^2 – ax – bx + ab4 @, Y" J2 \, J4 ?2 m, D- Y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
- \7 E+ q  Z" b" V8 ?7 j4 }$ Z(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd5 h1 g" L; ]' M0 Q1 j5 Y7 ]
如此種推，* g4 |5 i! l0 |- T( @
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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  M2 R( ~# s& T3 \+ D" d[ 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:
3 `# B  U9 v2 S1 t(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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( Y& q1 ^; H+ @' W3 \) qThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
* h3 H) n) k  W1 f3 Y/ e' G( ~第一個答中有獎. D8 @- p4 y% C$ f* P" r

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" A! B/ m/ t2 k4 m. t0 S(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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(x-x)= 0 ，所以答案係0，is it?

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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:
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(x-x)= 0 ，所以答案係0，is it?

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0 F, a( p- D- VBingo~

waikong

我係學校個學生會單張見過
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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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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]