| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎8 U8 H( C) B$ K) j/ s: s. R5 o; M6 a. i

1 ~& L) l( o1 h+ v(x - a) = x - a( _+ T' C) T, V
(x - a) (x - b) = x^2 – ax – bx + ab
. Q8 Q# R/ F5 q* t6 ~8 E+ W(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc- [/ H1 b9 |5 u+ t* ^( ~1 c: l- u* A
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
8 a$ x3 v2 w2 f如此種推，
! d7 B  o6 {3 ^) d  i(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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9 G* r9 t- L  Y7 D# E5 I9 f' u8 w- }% Y[ 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
2 }$ j1 E: A/ `3 D) C

Originally posted by Triangel at 2007-4-18 01:26 PM:
6 v/ \. K" ~6 R3 @(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
8 ^# {/ R" U' M
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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:
' I  `2 h/ k+ _- o4 B* t9 ^咁難既=.="
3 a# q8 K) Z1 G& L4 u7 I* V! A6 ~8 X8 P! h9 i+ f# V
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ X  F8 |0 P! x; K) [7 ?3 @$ EThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:5 X. T/ s. {  y! v: j) I5 m3 o+ {
第一個答中有獎
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& E1 n. |% w. J(x - ...

4 ^) V- }0 i  g7 }+ ]" M6 f- }) R- B

) G$ X) d# Z& y, r% z3 K8 r$ X! K(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:3 w; i: l5 O1 e# l. R/ l

6 J5 r3 k( t" t
+ Q' |1 m3 j& f- R6 M(x-x)= 0 ，所以答案係0，is it?

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8 U3 ^2 v. C0 ?
唔似a.math題
3 p1 C$ X% h2 [# P0 d% {/ Z似IQ題=.=1 M; Q. M0 k) B" @4 a  k

2 o2 Z9 n: C7 G! H2 G, X: w[ 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:" }( \- p* i  c+ x6 s  F1 F
6 k) U3 [, ?$ X0 R& ?' V( H. K

8 P; {% K6 t6 l4 t(x-x)= 0 ，所以答案係0，is it?

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/ Z  s9 |3 X2 v4 x) oBingo~

waikong

我係學校個學生會單張見過
" }/ h; v  l' ^6 U' ^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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% L$ |* @: I( Y) Y這條問題，貼落吹水版，名副其實8 I( \) ^4 H" f3 Q9 E! {# e

! L2 z( t+ I* o% b1 |- x4 A[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]