| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a( q* N9 P& r) q) T; d. X  Q6 W
(x - a) (x - b) = x^2 – ax – bx + ab
' a3 p, M' X% W3 ~0 T5 o3 ^(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc! ]; M; {! A# @0 {2 U3 P0 _6 V9 b
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd4 J* L; _" w9 C$ D! G( c- J
如此種推，
! E; {6 m4 y# W(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???5 A, D$ J! C+ S0 L4 {1 a
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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, Y  v, d8 n6 L! |- d4 R

Originally posted by Triangel at 2007-4-18 01:26 PM:
: ~; S  q: P% s  g3 k1 g(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc; A! q; O  H; ?& ?% Q

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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:
* v& t# b! T: C- c咁難既=.="
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# _. K, P: W3 i# A9 c8 q8 D3 ?[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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8 d. N( b5 _: n! P4 H! A$ R* oThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:, n& s; L' t. [: y  J
第一個答中有獎" X  g1 P6 ?% z
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(x - ...

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! ]" T% l0 e6 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:" {8 E6 e) ~, c) W4 x, \/ a
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(x-x)= 0 ，所以答案係0，is it?

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) B5 h! b5 n3 A8 D. y唔似a.math題" C, s! h% f; [3 K. W7 ^  S
似IQ題=.=
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+ C6 v9 Y" ^! F" c# X( @[ 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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# N3 ]. T( ~" f% t# q(x-x)= 0 ，所以答案係0，is it?

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% v/ V5 s# W, `* r, aBingo~

waikong

我係學校個學生會單張見過) f5 W; S! \: j5 W  }3 B
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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) Z) }- L8 S/ v8 i這條問題，貼落吹水版，名副其實$ n' k# R, ^0 P4 v$ z4 Y( m
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]