| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a! v" |& {1 V3 F6 U5 v$ ^
(x - a) (x - b) = x^2 – ax – bx + ab
+ F$ E6 G/ b# B# p* ], V, c(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc' `' E! M. M7 c5 Y6 i
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd* l* Z9 H. C; c- f
如此種推，
, M% S; x! x: \/ d  k7 T(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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:
/ n# \4 {' p/ d# h0 F(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc: m7 v  z8 z- o! |

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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:
6 {' W* o. N# t+ I! e1 l咁難既=.="; x" G( I( Z) W! T; ^- z
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

/ b) L! f8 C/ ^

4 q5 w5 E# D& ?6 aThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:, X) ?7 }5 a1 r2 b6 Q, B
第一個答中有獎$ k' y9 a8 J) {8 G1 c

4 U, w0 \$ g) G9 C: q8 d(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:% d! D4 `! }8 W% |! a, H4 ^* ~
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題6 z+ ?; F9 [1 ]0 G" i
似IQ題=.=- h( }- f4 T, _! O

0 ?' W1 ?6 R! A! K[ 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
1 L8 [; |9 O3 l: }) T, 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.........( d/ v6 q$ N+ f+ |) ~6 L

9 K9 L* M% V5 J' \# U( g( u這條問題，貼落吹水版，名副其實9 P0 ^  j7 B3 Z

* X7 T% y  \1 W  m& |2 F[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]