| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a4 K' \& R% _8 ?$ E5 ?! h
(x - a) (x - b) = x^2 – ax – bx + ab
: \% I  S; f9 i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
+ k* Y2 V/ s2 j, a5 C3 c& q(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd% y+ w. i2 ]! z" }5 R
如此種推，2 u8 H2 ?9 K( m0 M1 p# ?& t" W
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???7 Z4 w; X. G( H% ]# M

5 q; r+ V& x) [: ^, C: c- ?+ c[ 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1 {3 u; c0 e9 p$ {3 _5 q" E

Originally posted by Triangel at 2007-4-18 01:26 PM:
% X) [) ?) W" `6 r7 R1 W(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:
/ S+ L8 Y5 f+ q( `% O0 L( E6 n咁難既=.="9 L% d4 v7 t# J% t1 ^: `
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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4 B2 g4 u4 z2 n+ \; h) b: O0 FThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:& Q) C' E( O% e" r. U% O  V7 T( z
第一個答中有獎( q( d$ [" Y8 f9 Z8 X4 i

, P* q: [; i$ O* i- ~9 |% ?(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:4 w' I1 t% N3 O6 U2 W8 d7 B. h/ G

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
) j. V0 f" I# b6 X似IQ題=.=; N, b4 T2 c( `) a+ r0 ?6 |  t

: u+ c# q/ s0 s  |[ 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:6 z/ o- l1 ~8 {; M5 J: Y
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(x-x)= 0 ，所以答案係0，is it?

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4 T2 k. B; y' s9 eBingo~

waikong

我係學校個學生會單張見過
4 I- {, a! a3 y$ I  U' Q% n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 l# q/ V# @. D$ R

" V! Z  v+ ^. ^" ^  k這條問題，貼落吹水版，名副其實
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5 M1 u& t* n' S9 }: r$ y[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]