| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎" ^' D& f; o" U* |1 q$ D0 C' H

, y3 Q+ ^, @2 [/ i- N9 E(x - a) = x - a
/ ?& A5 e6 e8 l, x, `, e  G7 Z(x - a) (x - b) = x^2 – ax – bx + ab/ ~% i- a2 D$ `/ I! K0 q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
' r" C" t1 x/ y" Q  G, Z# K/ ](x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd5 _  ?* L: F' L' F% F' |" D
如此種推，8 m- a4 k' ]* U- e7 `. }
(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) D; i1 k& ~8 @: ~1 u5 \

Originally posted by Triangel at 2007-4-18 01:26 PM:
& U1 O1 H5 n" L(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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4 z- U6 d9 w' U- U7 k2 P[ 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 B+ O* @0 v2 Q; E咁難既=.="/ a7 L! p" G+ v' m! a

9 T7 V0 S/ ~0 m, C  c# Q3 t[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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2 p1 d& C6 U% n; {" K( }, vThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
: S' n7 T  [- s) N1 y  T. p第一個答中有獎9 e& A6 ?- g  l! o3 c
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(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:. T: ^! B! L5 j3 A1 q$ J+ F. D

8 P; @4 S6 B1 _" H# {% i, Y, @8 X- m. y7 B' D3 F& i
(x-x)= 0 ，所以答案係0，is it?

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& ]% `0 Z. F3 _8 f9 Z4 |- V( z. a& L6 V% o$ B
唔似a.math題
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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:
+ g* b& [7 n! U' v
' _. N+ d3 E# s& y% D2 ]% L+ d6 n; t8 s8 }5 N( T3 ^$ `6 W
(x-x)= 0 ，所以答案係0，is it?

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6 w  a; i8 |$ H2 p% M! J* |Bingo~

waikong

我係學校個學生會單張見過
2 w' h8 D$ n6 t2 S/ {! x1 J+ H: s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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這條問題，貼落吹水版，名副其實9 ?, B3 d, O# w4 ], p* g
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]