| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
( j5 e2 M1 U* X, h2 _! d+ @(x - a) (x - b) = x^2 – ax – bx + ab
& K0 L* ]+ y0 \(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
& W" f, q) I- w* R6 B3 Z3 ?% n(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd( Y' Z: K: X/ `/ b1 |
如此種推，
) F6 k$ @( l, K. q( ~  N(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???' q- o& A* z8 d, w$ G: G, o
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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:
. W- `/ a: \; o- ~- j: h& N# m(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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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:
0 ^* g8 }. P% I咁難既=.="+ k! k2 c/ X' x" g  t

' `8 n5 v- Z0 [& o5 i: a- Z2 B. `[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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- R1 R  V1 `' Q& Y4 R$ G& pThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
0 \1 J$ Q' _6 O7 c第一個答中有獎
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(x - ...

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2 M( c( `6 I$ m+ r% t(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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(x-x)= 0 ，所以答案係0，is it?

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: c+ U. V5 I) H- u: u5 S唔似a.math題3 n+ i& h8 Y+ I1 `& m+ a
似IQ題=.=0 H/ I0 @& j( R6 C! ?5 ?# p
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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  i8 z7 T( j# x3 L2 \0 Z
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.........  A' E) L1 i+ r! c8 @. U
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]