| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  b; p: X- t, u2 E; B' t5 n

+ y; C' P  N1 Y4 J5 o+ N(x - a) = x - a
2 g$ A: H6 g3 L(x - a) (x - b) = x^2 – ax – bx + ab5 K: Z6 c( l8 ?7 _, l5 O: c6 G
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ X. w$ x' b2 W6 K0 r# ?8 H(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd$ @' A8 g4 r' ]$ t2 e5 {8 V
如此種推，
; J/ e. g1 U* o+ i( u1 R(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???0 j' m! t1 n5 }
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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* I3 z7 M6 b; v( g' p

Originally posted by Triangel at 2007-4-18 01:26 PM:: F# d2 k' R6 b3 F) ^4 x3 b
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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( @$ z6 Z& H: u[ 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:
/ H: n3 c9 D. z+ H- Q, q咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

- T% b# ^: V+ `8 {( y) O$ W
2 H) m' q9 U+ r& S2 w! R) zThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
' D! w( z1 ~' c7 w' ?( m第一個答中有獎7 b# ^6 f2 E% T! l8 z: q+ 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:
+ o9 L+ b7 l% v5 p* `5 x! Y% F% b! ]
! }2 b; ]. ~; r- P. l( Y
(x-x)= 0 ，所以答案係0，is it?

! G+ A5 J2 K* |: x* b/ U

) O; g# N' i' f- _4 D" v+ c; Z: j; ^5 ?7 W, k
唔似a.math題* C, F: |7 G6 T2 p* [
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:
9 F! j, O' W4 p! s6 `& C( Y
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" L8 J1 o- [  n# E( a1 d(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  r! F' g- Z' {$ f' z" P
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.........% ~9 M9 F5 A. L% [1 h0 R% x1 Y/ M" I' ^2 Z
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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 ]