| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎/ _9 q5 N& g( s9 x- e6 A( {

1 t1 N8 e+ a) C0 `* _0 ?! v' x(x - a) = x - a
6 C. j: H! w' v! o" U5 z(x - a) (x - b) = x^2 – ax – bx + ab7 {; j+ o4 [3 U8 c1 _
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
* Y; A& c2 B% _+ b(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd# a  Z7 @( F$ p2 ?, T, a1 q
如此種推，
/ {% Q* i8 D/ l: p" f4 ]8 v8 W% z(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& [! j* n  X( V* d- G0 X
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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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
! ?: j5 Z& d4 I3 G& L8 G(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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6 Y; b" C& u: M/ `+ o4 f8 X0 ~7 {[ 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:: ~+ ~7 d: z' Z6 Z0 A, _# R' s
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

7 W" ~8 ?' ?- _- r

/ a4 ~  V' ]4 \! |, w, N3 y: NThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
, T% T0 d" g1 C5 o& f! I9 m第一個答中有獎' @( t' }' b7 s; C; g

# s. p3 F7 T0 [2 s  z5 B3 c(x - ...

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7 V; z, D) y: d4 G) ?3 S(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
" C% x. n! b, Z; q5 \1 G1 e! q- ?1 s* o' a1 K" w! z4 F6 W" ?" B
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(x-x)= 0 ，所以答案係0，is it?

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$ `  R& B' x, }0 ^唔似a.math題
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) A" ^8 {% u1 t/ b" L7 F[ 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' _: c* q' H, ?- c. y( Z: j(x-x)= 0 ，所以答案係0，is it?

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) F% W. k7 P1 Z8 x9 w/ p! A: gBingo~

waikong

我係學校個學生會單張見過* F( `- G: I; M: t% l8 s) J
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# P, L' g2 N0 Y3 ]5 k4 d; D

3 v' X7 X9 d# s' f9 b[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]