| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎9 q* S) j) T' p1 r( U8 t. E3 x
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(x - a) = x - a4 {5 G* i+ ~; ]# m# K  O0 S) s
(x - a) (x - b) = x^2 – ax – bx + ab2 g9 b7 o; f' k0 D1 R
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc: p8 @( }% y# i5 e. ?3 f
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
) M' o# }1 ]8 l# \: h如此種推，
1 @5 n. u3 I/ {4 @0 q/ _4 H5 ](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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' {7 h/ |! m/ g! h0 D$ s3 d9 ][ 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:) X0 B4 z* X& R& H& f8 w
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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* I4 o8 Y' r' Q% v( Q5 N; R$ x  q[ 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:3 k8 _% X7 i$ E: u% x
咁難既=.="9 n; o" \  Q$ o

2 w  ~/ F) }' _9 m[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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$ c; f1 a2 g0 ?' H& b) w6 z) l, I8 SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:& I5 T+ u! J8 _
第一個答中有獎
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(x - ...

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(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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6 c. _, M$ [! h$ ]& @(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題7 Q% L: k2 T6 U
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* j3 N8 B6 Y; G5 l6 V4 p
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........., Z( K2 m. R$ H# v  [: r
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這條問題，貼落吹水版，名副其實
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) C. N; }$ o/ _) |[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]