| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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7 x$ e5 e0 M5 X7 T* P  |; s(x - a) = x - a
3 v3 T/ e* O2 A' ]/ r% E/ b(x - a) (x - b) = x^2 – ax – bx + ab
8 }. z" I& s2 q# g: C& C(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc0 U* {9 J( K+ ]  C
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd1 R0 U4 ?" o" A+ C; E+ i
如此種推，
5 G! ?  f3 ?1 r: l6 A- k+ k(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???$ H" _/ w  X$ m, p0 T/ O( m
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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:* X+ b0 L% u$ |! ~5 \
(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:+ Z$ A! e% h; r: Q, S) m  m
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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1 \* f. v, N1 T! D  i- G3 Y% b/ k2 @Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
  J3 h$ y& s; G/ k第一個答中有獎
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(x - ...

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, ~. z- y9 N) o(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:% `. e8 ?; P' a( m+ u( @
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+ m; B  J" O8 L9 J, `0 M(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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, _) `5 R6 W( O; ~(x-x)= 0 ，所以答案係0，is it?

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3 r# u/ Y$ b/ c$ yBingo~

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.........5 n6 Q7 u0 g1 D# h: c3 U

, Z$ ~' {" A& D& C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 ]