| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎# I8 f. I8 T5 w- C3 W
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(x - a) = x - a
4 ~- U5 z4 h" }% V$ ]$ X( ]. s# l(x - a) (x - b) = x^2 – ax – bx + ab0 Q% y! Y* L, |" m9 y1 F
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc" V+ K. O. M$ s4 D0 T
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
9 u. M' N4 m7 a4 Z, r: C' o如此種推，
, T4 J) j6 X, m" V! o1 u(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???2 p3 M6 @9 l. M8 h% F" t
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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3 @& n3 {/ w, z# h: S

Originally posted by Triangel at 2007-4-18 01:26 PM:
# u1 j4 M1 i: A. |$ z% l- y' A(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:1 `5 s/ A0 _$ V* \1 A9 f. ?
咁難既=.="
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1 I% K% }: Z6 r[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:1 t2 C3 r, O2 {3 p% x" k
第一個答中有獎! ]$ S! F7 A! ]
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(x - ...

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$ V. I" P- l3 n( T* ^( h3 q(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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7 m+ q4 h9 o. @(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題+ _5 g+ X5 K1 P. e" H& v
似IQ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:
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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5 ?/ e) Q) X$ L$ ]$ q
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.........( f5 c1 }4 d3 U  J! g& q

6 o7 Y: @! l9 J8 g6 ^6 N$ D! j2 Z+ R' \這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]