| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎) E5 y- w, F5 ^4 F, [: T
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(x - a) = x - a
+ w# s' ?/ ?- P(x - a) (x - b) = x^2 – ax – bx + ab; Z$ D1 i) J0 u1 o9 m
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ Q  Q7 E2 s8 X: j$ H
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
; G+ R. V' Q$ e/ [. h如此種推，1 |8 ]$ t; S& I& i
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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2 K8 I( X4 d4 g$ |) A/ P[ 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, O. G6 a& [: o3 d' \

Originally posted by Triangel at 2007-4-18 01:26 PM:2 j' ?2 b5 {( c+ k4 U, \8 p
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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, o6 o& z5 \" M[ 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:- }) n8 ?+ m0 q& S7 C
咁難既=.="& X9 a2 W7 [4 z

* Q  }& M5 d/ V! C4 D[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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9 a0 \7 v2 S! P2 Y0 T) hThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
, O* ^1 O/ _0 m1 H" G5 v第一個答中有獎" X$ E# l# J2 f- Y+ v
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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:) M% G( \5 k" e9 X; U5 w
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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題% {9 G! v& t2 H
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:5 Y9 s; a2 v+ x! m# y; l6 y
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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! H/ V- L% L4 O; a$ n. P& ]) N3 O
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.........$ T% Z2 w) O! v" G% o: S- u$ B

0 Z/ i5 U% n: @" }3 T. a0 m這條問題，貼落吹水版，名副其實
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9 P* q# E% z" R+ O[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]