| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
6 u+ x0 l% Q9 @( h9 U(x - a) (x - b) = x^2 – ax – bx + ab
" A2 }$ T7 R& v' D3 ](x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 s3 w' ^2 N0 Q0 C(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd. G' i- C+ k/ T! o
如此種推，) S( f/ x3 F( x' E! W, E" w
(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
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Originally posted by Triangel at 2007-4-18 01:26 PM:5 C6 s! w: ~& f3 N
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc! P  O& I( u5 G) g5 a) s6 k
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" P7 s3 D9 b/ Y/ `3 P2 z1 c1 y8 J$ L4 w[ 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:" ]  ~* W  ~) r! h5 k
咁難既=.="
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( J, O' q$ T; k$ Y5 U. ^6 o" Q" p3 @1 F[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 l' @  r8 H" M5 N! T第一個答中有獎! Z$ {* C, v7 s' B/ J: F6 S
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(x - ...

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4 r. T4 A4 e# b$ v(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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! g4 E# R; O/ ?2 F$ ~(x-x)= 0 ，所以答案係0，is it?

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4 L9 P' W+ P2 p0 K6 ~2 ]2 q& Y; s. q唔似a.math題" N1 N4 h$ c% a( D' _9 d
似IQ題=.=0 Z4 l- [8 ]* L9 T+ ~3 ~

3 T; M& W: V4 B; f* f[ 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 C$ z( ~" Z3 d7 w- ?Bingo~

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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/ L; y2 K; p* x1 W* z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 ]