| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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6 Y+ h. d# a" V4 b2 s/ o  T(x - a) = x - a
% C9 i+ c1 G9 Q0 H+ w(x - a) (x - b) = x^2 – ax – bx + ab  U3 y, l3 M6 i) W$ l$ L
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc6 G! _, U/ r* i* Z$ [
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" o* B! R! `. h5 P' D+ H3 g
如此種推，
. Y* l  k8 F8 W& ~- @(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???  x! k5 d. P) M" }5 H: C$ ^9 `
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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# o5 I6 |* Z, @% n( q$ f4 I, ?

Originally posted by Triangel at 2007-4-18 01:26 PM:2 C0 r' |) ^& i% p- h
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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: @9 v9 _) f. c7 ^+ e' S[ 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:
! F4 N# {5 i/ y8 c1 [9 P  Y, @" D1 g咁難既=.="! O' N# X5 {3 K  o  W
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[ 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:
5 B* H) ^! C# G+ a% _4 }第一個答中有獎% F  R3 z; e/ ~* J. k8 d- k% n" S
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(x - ...

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5 ~3 S3 B2 Q: a/ O9 S: l6 X/ w# ](x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:/ {5 I8 Y; G' q

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(x-x)= 0 ，所以答案係0，is it?

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( Y) j9 v* h3 v2 w唔似a.math題* a* k) E1 v* v0 u% r7 I. p, s
似IQ題=.=
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7 N4 [$ b; Y( ^4 t[ 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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6 t- O* S% h3 g! k0 Y, ZBingo~

waikong

我係學校個學生會單張見過
3 A9 |% G: U1 R! {1 [7 `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.........) x$ h. }$ \3 a( _* P- {5 u  K
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這條問題，貼落吹水版，名副其實& I. [; s" [1 ]3 K* z! |
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]