| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a9 p6 g$ @7 z. O
(x - a) (x - b) = x^2 – ax – bx + ab. k, L, ]0 s, e$ H" ]3 N4 a3 {  p
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc5 r6 n. W# g$ G. H
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
* X. W1 D0 s8 N" {* H8 t0 l: l如此種推，
, g( ]& _9 U8 F2 _7 q(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???% t! P7 K; X# P$ D6 r& b

$ h& H7 n: _/ l5 b3 a* |2 H[ 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. x/ O1 \4 t2 E

Originally posted by Triangel at 2007-4-18 01:26 PM:
% }* H# I3 S* ]$ i5 i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc) s9 R4 ?+ i- F# d" r. j

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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:# {6 e: w/ q" p' f1 w5 `$ }
咁難既=.="
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* \+ Z/ o+ A" d$ n0 z3 \[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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3 f7 [, G+ F: N$ |+ t) rThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:7 F' D& }+ Q- J4 L
第一個答中有獎
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(x - ...

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8 i/ _% `5 \- ?& ?(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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, ]1 G3 ^& ]" C( E4 X1 p# z唔似a.math題
' k; K. s& [4 @4 l( Z似IQ題=.=# G$ a7 W; F; ~6 N5 T4 y
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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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Bingo~

waikong

我係學校個學生會單張見過2 l9 W  u  p6 `' L' t& D( [1 t- i/ y7 }9 c
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.........
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1 R3 W8 ~( p! e- c" f+ w: {3 ^這條問題，貼落吹水版，名副其實% }7 O3 @2 R# [! H' v9 t* A
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]