| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎0 d8 }  s% q, v& O6 e/ s( z% u

; @6 _2 F2 n$ O& D2 Z# v(x - a) = x - a
6 a& w6 ~& Z8 m, ~) X6 N0 j(x - a) (x - b) = x^2 – ax – bx + ab- C* s9 `1 C! X) }9 V
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 R5 F$ D( `# b2 O(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd! E# x$ C! ~7 S7 V' K
如此種推，
' a6 b7 A5 k1 \(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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6 @6 s* q' Y8 A' ^& U5 B1 N[ 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- T: f9 _: z8 P: a  U! Q

Originally posted by Triangel at 2007-4-18 01:26 PM:/ p0 \' o- C! o/ o0 z( X0 [: Y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc3 h9 z* X6 _* y

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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:
" t6 w7 f7 n. L0 r/ r& @咁難既=.="- [1 A( f+ i$ R. e0 @. P
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! @- I. Q+ e4 E7 t0 i9 GThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
. V) r0 L2 U" t4 m  ?/ F5 x4 k6 ~第一個答中有獎0 D0 f& F0 p' l7 ]( D

4 `; z* f3 v3 `; O4 l) ~; J(x - ...

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9 p* \6 Z% r7 F+ ~0 Z(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:2 ~2 T. @# e$ j; h$ Z  ^% V

3 g' q; V$ |% K9 b1 n9 B- T+ O0 i9 Z5 T, ?
(x-x)= 0 ，所以答案係0，is it?

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" \1 v  S- t+ D6 |唔似a.math題1 t, u5 x4 D  @' P/ e
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:0 E, o9 A' X8 {3 U( Y+ F$ i
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% ]8 M3 x: O# i  s(x-x)= 0 ，所以答案係0，is it?

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7 Q& J' [: B8 x# i3 v: ~7 |Bingo~

waikong

我係學校個學生會單張見過) O  t6 l, \: @4 q; 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.........
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- M, }9 f, o* L7 \( K% t% p* X這條問題，貼落吹水版，名副其實# t' I: k8 H. s
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]