| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎$ e9 h# a4 a* c$ f+ L2 e! K

3 i3 f: n. x) j5 |+ i(x - a) = x - a
: K- |/ G. r4 s7 S(x - a) (x - b) = x^2 – ax – bx + ab& ]9 A0 N* B9 }) h+ D
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 ]% H+ Y. ~; D4 y. b' V(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
" N8 W, H+ M, m4 ]9 F6 D4 `2 M如此種推，
; Z2 B* J, s; p5 u/ C(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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+ l  z4 H# R; d  _, B- |[ 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. W/ H. G$ B% R, Q: P

Originally posted by Triangel at 2007-4-18 01:26 PM:
$ g6 K2 Z% j! ^6 a(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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, [2 G, Y7 b! j4 i1 D8 [[ 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:: d+ w/ ^0 a5 G) x8 f
咁難既=.="% Z* W7 R$ B! ]1 W* m" T' R  Y

; _& d( d) E# h; X* a[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

+ {) V  \5 W+ ], z& z: i, B  x. M

/ H. N" \9 d1 Q- m0 MThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
% I" x  l6 b3 M8 l+ c* L7 t第一個答中有獎  ?2 \/ @0 N0 o
$ c/ a$ U9 X6 M
(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:
, F5 w$ ]# c/ H  C; J: t( u4 h7 T1 |0 C; S. s- ]. }& @
* ]1 |9 E/ x; U0 X& f
(x-x)= 0 ，所以答案係0，is it?

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5 L2 g& n) B4 p8 P$ c! E8 G2 K唔似a.math題
1 j$ ?# K1 B+ }8 {2 p似IQ題=.=
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9 V' r$ E" ~3 X% ]- u[ 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:
' R- \( D0 `: c1 G7 V; ^  z9 j3 b

  k7 b, L) Q, n) v! L( w5 g7 [(x-x)= 0 ，所以答案係0，is it?

7 l: h; x- N, _& c* ~) f" t+ h4 I2 w4 n. V8 A0 _- J& U9 M
Bingo~

waikong

我係學校個學生會單張見過; {( x6 {- O7 p2 h
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........., L+ @$ W" [+ b* z* y
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這條問題，貼落吹水版，名副其實% ^( |2 o4 o5 c' ?9 l5 \
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]